German riot police officers make a cordon to seal off left-wing and far-right protesters during a demonstration...
German riot police officers make a cordon to seal off left-wing and far-right protesters during a demonstration in Cologne October 25, 2015. Neo-Nazi groups, members of Germany's football hooligan scene and HoGeSa (hooligans against Salafists) were organising what they said was a demonstration against Islamic extremism. REUTERS/Wolfgang Rattay