Anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

Anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

Anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

Anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

A man holds a sign in support of refugees while anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

A sign welcomes refugees while anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group, in Seattle, Washington December 6, 2015. REUTERS/David Ryder

Anti-racist and anti-fascist protesters gather in response to a rumored demonstration by the Northwest Hammerskins, a skinhead group in Seattle, Washington December 6, 2015. REUTERS/David Ryder

Jack Anderson, a Kansas City member of the National Socialists Movement, speaks at a neo-Nazi rally at the Jackson County Courthouse in Kansas City, Missouri, November 9, 2013. The date is the 75th anniversary of Kristallancht, when Nazi Storm Troopers and others killed almost an estimated 91 Jews, destroyed synagogues, Jewish homes and shops and began the process that became the HolocaustREUTERS/Dave Kaup (UNITED STATES - Tags: CIVIL UNREST POLITICS)

A supporter of the English Defence League with a tattoo on his head stands by a replica hangman's noose and gallows during a protest outside the Old Bailey courthouse in London February 26, 2014. Two British Muslim converts were sentenced on Wednesday for hacking soldier Lee Rigby to death in broad daylight on a London street in a gruesome killing that horrified the nation and provoked an anti-Islamic backlash. REUTERS/Toby Melville (BRITAIN - Tags: CRIME LAW MILITARY CIVIL UNREST)

People demonstrate against skinheads attending the"Day of Honour" in Budapest February 8, 2014. Members of a far-right group are commemorating the break out attempt by Schutzstaffel (SS) troops from Soviet-surrounded Budapest during World War Two. The Schutzstaffel was a Nazi military organisation under Adolf Hitler and the Nazi Party. REUTERS/Bernadett Szabo (HUNGARY - Tags: ANNIVERSARY CIVIL UNREST POLITICS CONFLICT)

German Foreign Minister Guido Westerwelle (C) and heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko (L) walk along Independence Square in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: SPORT BOXING POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (R) and heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko walk along Independence Square in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: SPORT BOXING POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (R) listens to heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko as they walk along Independence Square in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: SPORT BOXING POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (R) talks with heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko as they walk along Independence Square in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: SPORT BOXING POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (C), heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko (L) and former economy minister and head of the union of Ukrainian opposition parties Arseny Yatsenyuk walk along a street after a meeting in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: SPORT BOXING POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (R) and heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko walk along a street after a meeting in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST SPORT BOXING)

People supporting EU integration hold a rally near a district court while demanding to release people detained during the recent clashes between police and protesters in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. The leaflet reads "Let's defend our children. National resistance task force". REUTERS/Valentyn Ogirenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

People supporting EU integration sing the national anthem as they hold a rally near a detention centre, where people detained during the recent clashes between police and protesters are held, in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Valentyn Ogirenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

German Foreign Minister Guido Westerwelle (C, front), heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko (L, front) and former economy minister and head of the union of Ukrainian opposition parties Arseny Yatsenyuk (R, front) walk along a street after a meeting in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST SPORT BOXING TPX IMAGES OF THE DAY)

German Foreign Minister Guido Westerwelle (L) meets with Vitali Klitschko, heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader, in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST SPORT BOXING)

German Foreign Minister Guido Westerwelle (C), heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader Vitali Klitschko (R) and former economy minister and head of the union of Ukrainian opposition parties Arseny Yatsenyuk pose for a picture during a meeting in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST SPORT BOXING)

German Foreign Minister Guido Westerwelle (L) meets with Vitali Klitschko, heavyweight boxing champion and UDAR (Ukrainian Democratic Alliance for Reform) party leader, in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST SPORT BOXING)

A woman supporting EU integration (L) gestures as she speaks with supporters of the pro-presidential Party of the Regions (R) holding a rally in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

A man supporting EU integration holds a flag during a rally in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

A woman supporting EU integration (L) gestures as she speaks with supporters of the pro-presidential Party of the Regions (R) holding a rally in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

Interior Ministry members sit behind shields inside a bus near the Ukrainian cabinet of ministers building during a rally to support EU integration in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

Interior Ministry members sit behind shields inside a bus near the Ukrainian cabinet of ministers building during a rally to support EU integration in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

Interior Ministry members sit behind shields inside a bus near the Ukrainian cabinet of ministers building during a rally to support EU integration in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

People supporting EU integration (L) speak with supporters of the pro-presidential Party of the Regions (R) holding a rally in Kiev December 4, 2013. Urbane liberals are joining black-booted skinheads to protest on the streets of Kiev, but if the Orange Revolution of nine years ago is to be repeated, they need a leader to unite them. Enter Vitaly Klitschko, a towering world boxing champion with a doctorate in sports science, who is looking increasingly like the opposition's most powerful contender. The leaflet on the tree reads "Demand number one is the resignation of Yanukovich". REUTERS/Vasily Fedosenko (UKRAINE - Tags: POLITICS CIVIL UNREST)

A member of a self-described skinhead group trains at a gym in Ulan Bator June 22, 2013. Over the past years, ultra-nationalist groups have expanded in the country and among those garnering attention is Tsagaan Khass, which has recently shifted its focus from activities such as attacks on women it accuses of consorting with foreign men to environmental issues, with the stated goal of protecting Mongolia from foreign mining interests. This ultra-nationalist group was founded in the 1990s and currently has more than a hundred active members. REUTERS/Carlos Barria (MONGOLIA - Tags: SOCIETY POLITICS)

Tattoos are seen on the back of a member of a self-described skinhead group as he trains at a gym in Ulan Bator June 22, 2013. Over the past years, ultra-nationalist groups have expanded in the country and among those garnering attention is Tsagaan Khass, which has recently shifted its focus from activities such as attacks on women it accuses of consorting with foreign men to environmental issues, with the stated goal of protecting Mongolia from foreign mining interests. This ultra-nationalist group was founded in the 1990s and currently has 100-plus members. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: POLITICS ENVIRONMENT BUSINESS SOCIETY EMPLOYMENT)

ATTENTION EDITORS: PICTURE 06 OF 25 FOR PACKAGE 'MONGOLIA'S ENVIRONMENTAL NEO-NAZIS'. TO FIND ALL IMAGES SEARCH 'TSAGAAN KHASS'

A member of a self-described skinhead group clenches his fist as he trains at a gym in Ulan Bator June 22, 2013. Over the past years, ultra-nationalist groups have expanded in the country and among those garnering attention is Tsagaan Khass, which has recently shifted its focus from activities such as attacks on women it accuses of consorting with foreign men to environmental issues, with the stated goal of protecting Mongolia from foreign mining interests. This ultra-nationalist group was founded in the 1990s and currently has 100-plus members. Picture taken June 22, 2013. REUTERS/Carlos Barria (MONGOLIA - Tags: POLITICS ENVIRONMENT BUSINESS SOCIETY EMPLOYMENT)

ATTENTION EDITORS: PICTURE 07 OF 25 FOR PACKAGE 'MONGOLIA'S ENVIRONMENTAL NEO-NAZIS'. TO FIND ALL IMAGES SEARCH 'TSAGAAN KHASS'

A skinhead tattoo of a man is seen at a far-right wing festival in the village of Viereck, some 130 km (81 miles) north of Berlin, August 11, 2012. Some 2000 people protested against the 'Pressefest' gathering that is organised by the Deutsche Stimme, a publication of the far right National Democratic Party of Germany (NPD). The festival was attended by some 1000 neo-nazies from Germany and other European countries, a spokesman of the police said. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS CIVIL UNREST)

A skinhead tatoo of a man is seen at a far-right wing festival in the village of Viereck, some 130 km (81 miles) north of Berlin, August 11, 2012. Some 2000 people protested against the 'Pressefest' gathering that is organised by the Deutsche Stimme, a publication of the far right National Democratic Party of Germany (NPD). The festival was attended by some 1000 neo-nazies from Germany and other European countries, a spokesman of the police said. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS CIVIL UNREST)

Peter Gallagher leaves flowers at a memorial honouring the six victims of a shooting at a Sikh Temple in Oak Creek, Wisconsin August 7, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin, was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION CIVIL UNREST)

FBI agents walk past the entrance to the Sikh Temple in Oak Creek, Wisconsin, August 7, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW)

A memorial honors the six victims of a shooting at a Sikh Temple in Oak Creek, Wisconsin, August 7, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners prepare for a candlelight vigil at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Wisconsin Governor Scott Walker attends a prayer service at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION POLITICS)

Mourners cry during a candlelight vigil at the Sikh temple in Brookfield, Wisconsin, on August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Wisconsin Governor Scott Walker attends a prayer service at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION POLITICS)

Mourners attend a candlelight vigil at the Sikh temple in Brookfield, Wisconsin, on August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION TPX IMAGES OF THE DAY)

Wisconsin Governor Scott Walker attends a prayer service at the Sikh Temple in Brookfield, Wisconsin on August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION POLITICS)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

A mourner cries during a candlelight vigil at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners cry during a candlelight vigil at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

A mourner cries during a candlelight vigil at the Sikh Temple in Brookfield, Wisconsin August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin, August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin, August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Mourners attend a prayer service at the Sikh Temple in Brookfield, Wisconsin, August 6, 2012. The gunman who killed six worshipers at a Sikh temple in Wisconsin was identified as a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in skinhead rock bands. The assailant, shot dead by police at the scene on Sunday, was identified as Wade Michael Page. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW RELIGION)

Harjit Singh prays at the Gurdwara Sahib Sikh Temple in West Sacramento, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: RELIGION SOCIETY CRIME LAW)

Darshan Kaur (L) and her seven-year-old son Jaskirat Singh pray at the Gurdwara Sahib Sikh Temple in West Sacramento, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: CRIME LAW RELIGION SOCIETY)

Sikhs gather to pray at the Sikh Temple Gurdwara Sri Sachkand Sahib in Roseville, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: SOCIETY CRIME LAW RELIGION)

Randhir Singh (C) prays at the Sikh Temple Gurdwara Sri Sachkand Sahib in Roseville, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: SOCIETY RELIGION CRIME LAW)

Kulwant Kaur (L) and her daughter Jasime Kaur pray at the Sikh Temple Gurdwara Sri Sachkand Sahib in Roseville, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: RELIGION CRIME LAW SOCIETY)

Sarabjit Singh prays at the Gurdwara Sahib Sikh Temple in West Sacramento, California, August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: CRIME LAW RELIGION SOCIETY)

Parvinder Singh reads from the Guru Granth Sahib, the holy book of Sikhs, at the Gurdwara Sahib Sikh Temple in West Sacramento, California August 6, 2012. The gunman who killed six people at a Wisconsin Sikh temple was a 40-year-old U.S. Army veteran and authorities said they were investigating possible links to white supremacist groups and his membership in a skinhead rock band. REUTERS/Max Whittaker (UNITED STATES - Tags: SOCIETY RELIGION CRIME LAW)