Placards against nazism and racism are seen as people hold hands during a vigil for the victims of a shooting, at Marktplatz in Hanau, near Frankfurt, Germany, February 21, 2020. REUTERS/Kai Pfaffenbach

Visitors look at an exhibition backed by Russia's embassy in Bulgaria titled "75 years since the liberation of Eastern Europe from nazism", in Sofia, Bulgaria, September 9, 2019. REUTERS/Stoyan Nenov

Protesters take part in a demonstration against an exhibition backed by Russia's embassy in Bulgaria titled "75 years since the liberation of Eastern Europe from nazism", in Sofia, Bulgaria, September 9, 2019. REUTERS/Stoyan Nenov

People attend an event to commemorate the victims of Nazism in World War II, at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

People attend an event to commemorate the victims of Nazism in World War II, at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

A man walks during an event to commemorate the victims of Nazism in World War II at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

Latvian army soldiers walk past monument during an event to commemorate the victims of Nazism in World War II at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

People attend an event to commemorate the victims of Nazism in World War II, at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

A man walks with flowers during an event to commemorate the victims of Nazism in World War II, at the memorial in Salaspils, Latvia May 8, 2018. REUTERS/Ints Kalnins

A woman stands next to a statue during an event to commemorate the victims of Nazism in World War II, at the Salaspils Memorial Ensemble, Latvia May 8, 2018. REUTERS/Ints Kalnins

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

People hold a march against anti-semitism and nazism near a monument commemorating the victims of Babyn Yar (Babiy Yar), one of the biggest single massacres of Jews during the Nazi Holocaust, in Kiev, Ukraine April 13, 2018. REUTERS/Gleb Garanich

Russia's President Vladimir Putin gives a speech during a meeting of the Pobeda (Victory) Organising Committee, with a focus on developing humanitarian cooperation at the government and public level with other countries, in order to promote objective information on Russia’s history and present, including its role in the victory over Nazism, at the Kremlin in Moscow on April 20, 2017. REUTERS/Alexander Nemenov/Pool

Russia's President Vladimir Putin arrives to chair a meeting of the Pobeda (Victory) Organising Committee, with a focus on developing humanitarian cooperation at the government and public level with other countries, in order to promote objective information on Russia’s history and present, including its role in the victory over Nazism, at the Kremlin in Moscow on April 20, 2017. REUTERS/Alexander Nemenov/Pool

Russia's President Vladimir Putin arrives to chair a meeting of the Pobeda (Victory) Organising Committee, with a focus on developing humanitarian cooperation at the government and public level with other countries, in order to promote objective information on Russia’s history and present, including its role in the victory over Nazism, at the Kremlin in Moscow on April 20, 2017. REUTERS/Alexander Nemenov/Pool

Russia's President Vladimir Putin arrives to chair a meeting of the Pobeda (Victory) Organising Committee, with a focus on developing humanitarian cooperation at the government and public level with other countries, in order to promote objective information on Russia’s history and present, including its role in the victory over Nazism, at the Kremlin in Moscow on April 20, 2017. REUTERS/Alexander Nemenov/Pool

Defendant Beate Zschaepe, accused of helping found a neo-Nazi cell, the National Socialist Underground (NSU), and of complicity in the murders of eight Turks, a Greek and a German police woman across Germany between 2000 and 2007 and her her lawyer Mathias Grasel, arrive for the continuation of her trial at a courtroom in Munich, southern Germany, October 6, 2016. REUTERS/Christof Stache/Pool

Defendant Beate Zschaepe, accused of helping found a neo-Nazi cell, the National Socialist Underground (NSU), and of complicity in the murders of eight Turks, a Greek and a German police woman across Germany between 2000 and 2007, arrives for the continuation of her trial at a courtroom in Munich, southern Germany, October 6, 2016. REUTERS/Christof Stache/Pool

Defendant Beate Zschaepe, accused of helping found a neo-Nazi cell, the National Socialist Underground (NSU), and of complicity in the murders of eight Turks, a Greek and a German police woman across Germany between 2000 and 2007, arrives for the continuation of her trial at a courtroom in Munich, southern Germany, October 6, 2016. REUTERS/Christof Stache/Pool

Defendant Beate Zschaepe, accused of helping found a neo-Nazi cell, the National Socialist Underground (NSU), and of complicity in the murders of eight Turks, a Greek and a German police woman across Germany between 2000 and 2007, arrives for the continuation of her trial at a courtroom in Munich, southern Germany, October 6, 2016. REUTERS/Christof Stache/Pool

Simon Brodkin (aka Lee Nelson) is removed from a press conference by Republican presidential candidate Donald Trump at Turnberry Golf course in Turnberry, Scotland, June 24, 2016. REUTERS/Carlo Allegri

A protester holds up golf balls with a swastika as he is removed from a press conference by Republican presidential candidate Donald Trump at Turnberry Golf course in Turnberry, Scotland, June 24, 2016. REUTERS/Carlo Allegri

A protester holds up golf balls with a swastika as he is removed from a press conference by Republican presidential candidate Donald Trump at Turnberry Golf course in Turnberry, Scotland, June 24, 2016. REUTERS/Carlo Allegri

Military enthusiasts dressed as Nazi troops take part in a re-enactment of a World War II battle at the Hero fortress as they mark the 75th anniversary of the Nazi Germany invasion, in Brest, Belarus June 22, 2016. REUTERS/Vasily Fedosenko

Military enthusiasts dressed as Nazi troops and Soviet Red Army take part in a re-enactment of a World War II battle at the Hero fortress as they mark the 75th anniversary of the Nazi Germany invasion, in Brest, Belarus June 22, 2016. REUTERS/Vasily Fedosenko

Military enthusiasts dressed as Soviet Red Army stand during the minute of silence after they took part in a re-enactment of a World War II battle at the Hero fortress as they mark the 75th anniversary of the Nazi Germany invasion, in Brest, Belarus June 22, 2016. REUTERS/Vasily Fedosenko

Military enthusiasts dressed as Nazi troops and Soviet Red Army and civilians take part in a re-enactment of a World War II battle at the Hero fortress as they mark the 75th anniversary of the Nazi Germany invasion, in Brest, Belarus June 22, 2016. REUTERS/Vasily Fedosenko

Defendant Reinhold Hanning, a 94-year-old former guard at Auschwitz death camp, sits in a courtroom before his trial in Detmold, Germany, April 6, 2016. REUTERS/Friso Gentsch/Pool TPX IMAGES OF THE DAY

Frazier Glenn Cross, 74, a former senior member of the Ku Klux Klan, talks to the Johnson County District Judge Kelly Ryan (not pictured) during his sentencing hearing in Johnson County District Court in Olathe, Kansas October 10, 2015. A judge on Tuesday denied a request for a new trial and prepared to decide whether a white supremacist convicted of shooting three people to death at two Jewish centers in Kansas last year should be sentenced to death. REUTERS/Joe Ledford/The Kansas City Star/Pool

Frazier Glenn Cross, 74, a former senior member of the Ku Klux Klan, listens during his sentencing hearing in Johnson County District Court in Olathe, Kansas October 10, 2015. A judge on Tuesday denied a request for a new trial and prepared to decide whether a white supremacist convicted of shooting three people to death at two Jewish centers in Kansas last year should be sentenced to death. REUTERS/Joe Ledford/The Kansas City Star/Pool

Frazier Glenn Cross, 74, a former senior member of the Ku Klux Klan, reacts during his sentencing hearing in Johnson County District Court in Olathe, Kansas October 10, 2015. A judge on Tuesday denied a request for a new trial and prepared to decide whether a white supremacist convicted of shooting three people to death at two Jewish centers in Kansas last year should be sentenced to death. REUTERS/Joe Ledford/The Kansas City Star/Pool

Frazier Glenn Cross, 74, a former senior member of the Ku Klux Klan, speaks during his sentencing hearing in Johnson County District Court in Olathe, Kansas October 10, 2015. A judge on Tuesday denied a request for a new trial and prepared to decide whether a white supremacist convicted of shooting three people to death at two Jewish centers in Kansas last year should be sentenced to death. REUTERS/Joe Ledford/The Kansas City Star/Pool

Frazier Glenn Cross, 74, a former senior member of the Ku Klux Klan, speaks during his sentencing hearing in Johnson County District Court in Olathe, Kansas October 10, 2015. A judge on Tuesday denied a request for a new trial and prepared to decide whether a white supremacist convicted of shooting three people to death at two Jewish centers in Kansas last year should be sentenced to death. REUTERS/Joe Ledford/The Kansas City Star/Pool

A Nazi swastika banner hangs on the facade of the Prefecture Palace in Nice which is being used as part of a movie set during the filming of a WWII film in the old city of Nice, France, September 29, 2015. The Prefecture released a statement on Monday to explain the Nazi banner's presence after strong public reaction. The Prefecture Palace will be the Excelsior hotel for the film "Un sac de billes", recreating events in Nice under the Occupation in World War Two. REUTERS/Eric Gaillard

Medics tend to a left-wing protestor (on the ground) during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

German riot police officers face left-wing protestors during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

Protestors stand on the roof of left-wing culture centre Rote Flora during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

German riot police officers stand in the street during a demonstration of left-wing protestors against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

German riot police officers clear the street during a demonstration of left-wing protestors against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A left-wing protestor walks in front of police water cannons during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer TPX IMAGES OF THE DAY

A left-wing protestor covers his face as he walks in front of police water cannons during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A left-wing protestor walks in front of police water cannons during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A left-wing protestor walks in front of police water cannons during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A left-wing protestor covers his face as he walks in front of police water cannons during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg's Schulterblatt street in Schanzenviertel district, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A woman with a buggy stands in front of a row of policemen during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A left-wing protestor wearing a shirt reading: " Against Nazis " takes part in a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

Left-wing protestors sit beside a banner reading: " No Place for Nazis " during a demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

Police forces on horses patrol during a left-wing demonstration against a Nazi demonstration, which was forbidden by authorities, in Hamburg, September 12, 2015. More than 10000 people demonstrate against the planned Nazi rally. REUTERS/Fabian Bimmer

A "No tresspasing" sign is pictured near railway tracks in an area where a Nazi train is believed to be at, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Polish authorities started looking for the train in August, tipped off by a German and a Pole who said through lawyers that they had found it in the southwestern district of Walbrzych and expected 10 percent of the value of the findings as a reward. REUTERS/Kacper Pempel

A woman walks out from the entrance of tunnels, which are part of the Nazi Germany "Riese" construction project, now used by the Institute of Geophysics, Polish Academy of Sciences (PAN) under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel

Journalists visit underground tunnels, which are part of the Nazi Germany "Riese" construction project, under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel

Journalists visit underground tunnels, which are part of the Nazi Germany "Riese" construction project, under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel TPX IMAGES OF THE DAY

An underground tunnel, which is part of the Nazi Germany "Riese" construction project, is pictured under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel

Journalists talk as they visit underground tunnels, which are part of the Nazi Germany "Riese" construction project, under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel

An underground tunnel, which is part of the Nazi Germany "Riese" construction project, is pictured under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel

People walk through a tunnel, which is part of the Nazi Germany "Riese" construction project, under the Ksiaz castle in an area where a Nazi train is believed to be, in Walbrzych, southwestern Poland September 3, 2015. Poland said on Friday it was almost certain it had located the Nazi train rumored to have gone missing near the close of World War Two loaded with guns and jewels. Photographs taken using ground-penetrating radar equipment showed a train more than 100 metres (330 feet) long, the first official confirmation of its existence, Deputy Culture Minister Piotr Zuchowski said. REUTERS/Kacper Pempel