At the 2016 European Championship, violent clashes between Russian and English supporters in Marseille put the spotlight on Russian hooliganism.
Russian hooligans injured over 100 English supporters, beating two into a coma.
It has raised serious concerns before Russia hosts the 2018 World Cup.
In rare interviews with members of the Orel Butchers – who attacked English fans in Marseille – a world is revealed where brutal violence has become a mark of honour.
Watch more: Russia’s Hooligan Army, BBC 2, Thursday, 16 February.
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