Two women, dressed as videogame Streetfighter's characters Chun-Li and Cammy (R), play the game on a Sony playstation in Cologne, Germany August 5, 2015. The Gamescom convention, Europe's largest video games trade fair, runs from August 5 to August 9. REUTERS/Kai Pfaffenbach

Demonstrators confront police during a protest against the government of President Nicolas Maduro in Caracas, February 22, 2014. A female student and a young supermarket worker were the latest fatalities from Venezuela's political unrest as the death toll from 10 days of violence rose on Saturday to at least eight. The graffiti reads, "Damn Chavez," and "The hooded join the fight." REUTERS/Jorge Silva (VENEZUELA - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) 

Riot policemen protect a man, that was accused of trying to hit a Buddhist monk, as a monk tries to punch him after an incident at a polling station, in which voters protested against alleged election irregularities, in Phnom Penh July 28, 2013. Cambodians voted on Sunday in an election likely to hand another five years in power to Asia's longest-serving prime minister, Hun Sen, but an energised opposition says there have been irregularities and it will continue to fight for true democracy. REUTERS/Damir Sagolj (CAMBODIA - Tags: CIVIL UNREST POLITICS ELECTIONS RELIGION TPX IMAGES OF THE DAY) 

A supporter of former Pakistani President Pervez Musharraf, who is the head of the All Pakistan Muslim League (APML) political party, kicks an anti-Musharraf lawyer during Musharraf's hearing at an anti-terrorism court (ATC), in Rawalpindi April 23, 2013. An ATC in Rawalpindi granted Musharraf's request to meet his lawyers on Tuesday. Musharraf appeared before the court in relation to the Benazir Bhutto murder case and made three requests including the request to unfreeze his assets and bank accounts, local media reported. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CRIME LAW CIVIL UNREST) 

A member of the Muslim Brotherhood and supporter of Egypt's President Mohamed Mursi punches an anti-Brotherhood protester at Tahrir Square, the focal point of the Egyptian uprising, in Cairo October 12, 2012. Supporters and opponents of Mursi threw stones and bottles at each other, showing feelings still run high between rival groups trying to shape the new Egypt after decades of autocracy. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: POLITICS CIVIL UNREST) 

Members of the Bangladesh Chhatra League (BCL), a pro-government student front, beat up with a student of Jagannath University who was accused of vandalizing cars, during a clash in Dhaka September 25, 2011. Hundreds of students from Jagannath University staged a demonstration on Sunday demanding the scrapping of a clause in the Jagannath University Act, 2005, which deems the institution ineligible of receiving government funding, local media reported. REUTERS/Andrew Biraj (BANGLADESH - Tags: EDUCATION CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) 

Members of the Bangladesh Chhatra League (BCL), a pro-government student front, beat up a student of Jagannath University (C) who was accused of vandalizing cars, during a clash in Dhaka September 25, 2011. Hundreds of students from Jagannath University staged a demonstration on Sunday demanding the scrapping of a clause in the Jagannath University Act, 2005, which deems the institution ineligible of receiving government funding, local media reported. REUTERS/Andrew Biraj (BANGLADESH - Tags: EDUCATION CIVIL UNREST POLITICS) 

Bare knuckle boxers play act a fight during the Lady of the Lake Festival in the village of Irvinestown July 21, 2010. The festival theme is based on a mysterious lady who was known to glide over the waters of Lower Lough Erne according to the Fermanagh Lakelands Tourism website. REUTERS/Cathal McNaughton (NORTHERN IRELAND - Tags: SOCIETY ENTERTAINMENT IMAGES OF THE DAY) 

Government supporters clash with anti-government demonstrators several blocks from the Government House in Bangkok early morning September 2, 2008. At least one person was killed and 34 hurt, four critically, in clashes on Tuesday between pro- and anti-government demonstrators in Bangkok, a Thai health ministry official said. REUTERS/Adrees Latif (THAILAND) 

Manchester United supporters scuffle with Russian men outside a street cafe in central Moscow May 21, 2008. REUTERS/Sergei Karpukhin (RUSSIA) 

Visitors play Street Fighter IV video games at Amusement Expo 2008 in Chiba, east of Tokyo February 15, 2008. Video game developer Capcom Co Ltd, which has brought out a new version to coincide with the 20th anniversary of the original Street Fighter's debut, says it hopes to draw back old fans of game and hopefully their kids as well. REUTERS/Kim Kyung-Hoon (JAPAN) 

A gang member slingshots a dart towards rivals while feuding in the streets of the East Timor capital Dili June 1, 2006. REUTERS/Adrees Latif (EAST TIMOR) 

May Day protestors pose in front of a burning barricade after peaceful May Day protests turned into street fights in Berlin May 1, 2006. REUTERS/Pawel Kopczynski 

German riot police are deployed after peaceful May Day protests turned into street fights in Berlin May 1, 2006. REUTERS/Pawel Kopczynski 

Academy Award nominated director Marshall Curry poses for a portrait in New York, February 25, 2006. Curry's film "Street Fight" is nominated for Best Documentary Feature in the awards which will be announced March 5 in Los Angeles. Picture taken on February 25, 2006. REUTERS/Chip East 

Academy Award nominated director Marshall Curry poses for a portrait in New York, February 25, 2006. Curry's film "Street Fight" is nominated for Best Documentary Feature in the awards which will be announced March 5 in Los Angeles. REUTERS/Chip East 

Academy Award nominated director Marshall Curry poses for a portrait in New York, February 25, 2006. Curry's film "Street Fight" is nominated for Best Documentary Feature in the awards which will be announced March 5 in Los Angeles. REUTERS/Chip East 

Academy Award nominated director Marshall Curry poses for a portrait in New York, February 25, 2006. Curry's film "Street Fight" is nominated for Best Documentary Feature in the awards which will be announced March 5 in Los Angeles. Picture taken on February 25, 2006. REUTERS/Chip East 

Haitians fight with the Haitian police during a protest against the visit of Dominican Republic President Leonel Fernandez in Port-au-Prince, Haiti, December 12, 2005. REUTERS/Eduardo Munoz Pictures of the Month December 2005 

Left-wing demonstrators celebrate in front of burning barricades following May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. 

A police officer is carried away by his colleagues from the riot police after being injured during May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann WR/CP 

Left-wing demonstrators celebrate in front of a water cannon during May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann WR/CP 

A news photographer takes a picture of a burning barricade during May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Fabrizio Bensch WR/CP 

Left-wing demonstrators stand in front of burning barricades following May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann WR/CP 

MAY DAY DEMONSTRATORS CELEBRATE IN FRONT OF BURNING BARRICADES FOLLOWING MAY DAY DEMONSTRATIONS IN BERLIN. Left-wing demonstrators celebrate in front of burning barricades following May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann 

A left-wing May Day demonstrator stands on top of a burning barricade following May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann WR/CP 

GERMAN POLICE OFFICERS RUN IN FULL RIOT GEAR DURING MAY DAY DEMONSTRATIONS THAT TURNED INTO FIERCE STREETFIGHTS IN BERLIN. German police officers run in full riot gear during May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann 

A young left-wing protester is dragged away by German riot police officers after being arrested at a peaceful May Day demonstration that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Wolfgang Rattay WR/ 

A May Day protester throws a stone at German riot police officers during a May Day demonstration that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of the German capital, Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Fabrizio Bensch WR/GB 

German police officers in full riot gear take cover as fireworks explode next to them following peaceful May Day demonstration that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Wolfgang Rattay WR/GB 

Young left-wing protesters try to set alight a U.S. flag during May Day demonstrations that turned into fierce streetfights in Berlin May 1, 2004. Violence broke out on Saturday in the district of Kreuzberg after peaceful left-wing and anti-Nazi demonstrations. REUTERS/Tobias Schwarz WR/GB 

May Day protesters push a car over after peaceful May Day
demonstrations turned into fierce streetfights in Berlin May 1, 2003.
Violence broke out on Thursday in the Kreuzberg district, after
peaceful left-wing and anti-Nazi demonstrations. REUTERS/Michael
Dalder

WR 

Firefighters put out the fire of a burning car after peaceful May Day
demonstrations turned into fierce streetfights in Berlin May 1, 2003.
Violence broke out on Thursday in the district of the German capital,
Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations.
REUTERS/Arnd Wiegmann

WR/WS 

A firefighter puts out the fire of a burning car after peaceful May Day
demonstrations turned into fierce streetfights in Berlin May 1, 2003.
Violence broke out on Thursday in the district of the German capital,
Kreuzberg, after peaceful left-wing and anti-Nazi demonstrations. RIGHTS
FREE REUTERS/Arnd Wiegmann

WR/WS 

A May Day protester flashes a victory sign in front of a burning car
after peaceful May Day demonstrations turned into fierce streetfights
in Berlin May 1, 2003. Violence broke out on Thursday in the Kreuzberg
district, after peaceful left-wing and anti-Nazi demonstrations.
REUTERS/Arnd Wiegmann

WR 

A German riot policeman runs next to a burning car after peaceful May
Day demonstrations turned into fierce streetfights in Berlin May 1,
2003. Violence broke out on Thursday in the Kreuzberg district, after
peaceful left-wing and anti-Nazi demonstrations. REUTERS/Arnd Wiegmann

WR 

A car burns after peaceful May Day demonstrations turned into fierce
streetfights in Berlin May 1, 2003. Violence broke out on Thursday in
the Kreuzberg district, after peaceful left-wing and anti-Nazi
demonstrations. REUTERS/Arnd Wiegmann

WR 

A May Day protester runs in front of a burning car after peaceful May
Day demonstrations turned into fierce streetfights in Berlin May 1,
2003. Violence broke out on Thursday in the district of the German
capital, Kreuzberg, after peaceful left-wing and anti-Nazi
demonstrations. REUTERS/Michael Dalder

WR/WS 

A car burns after peaceful May Day demonstrations turned into fierce
streetfights in Berlin May 1, 2003. Violence broke out on Thursday in
the Kreuzberg district, after peaceful left-wing and anti-Nazi
demonstrations. REUTERS/Michael Dalder

WR 

A masked May day protester throws stones at German riot police from
atop of a burning car after peaceful May Day protests turned into
fierce streetfights in Berlin May 1, 2003. Violence broke out on
Thursday in the district of the German capital, Kreuzberg, after
peaceful left-wing and anti-Nazi demonstrations. REUTERS/Michael
Dalder

WR/WS 

A German riot policeman runs for cover in front of a burning car after
peaceful May Day protests turned into fierce streetfights in Berlin May
1, 2003. Violence broke out on Thursday in the district of the German
capital, Kreuzberg, after peaceful left-wing and anti-Nazi
demonstrations. REUTERS/Michael Dalder

WR/WS 

A punk shows his tongue when he is searched by riot police during a meeting of punks and anarchist youth in central Bremen, early morning August 4. More than 6,000 policemen are deployed in Hanover and Bremen to prevent a repetition of last years "chaos days" gathering that ended in streetfights. 

Punks hug a riot police woman during a meeting of punks and anarchist youth in central Bremen, early morning August 4. More than 6,000 policemen are deployed in Hanover and Bremen to prevent a repetition of last years "chaos days" gathering that ended in streetfights. 

German police arrest a punk during a meeting of punks and anarchist youth in central Bremen, early morning August 4. More than 6,000 policemen are deployed in Hanover and Bremen to prevent a repetition of last years "chaos days" gathering that ended in streetfights. 

German police arrest a punk during a meeting of punks and anarchists in central Bremen, early morning August 4. More than 6,000 policemen are deployed in Hanover and Bremen to prevent a repetition of last years "chaos days" gathering that ended in streetfights. 

A young punk girl walks past a German policeman in downtown Hanover, August 2. More than 6,000 policemen are deployed to prevent a repetition of last years chaos days of autononous youth and punks that ended in streetfights.