Not to be confused with the English football 'hooligan', the UltraS are the hardcore subculture of fans at the two main Rome football clubs—AS Roma and SS Lazio. With neo-fascist sympathies, these groups (the Boys at Roma and the Irriducibili at Lazio) are political and well-organised.

Following years of work inside the groups and interviews with the leading figures within the organisations, Gary Armstrong and Alberto Testa have written a fascinating expose and examination of the UltraS. Football, Fascism and Fandom is a unique and terrifying study of a group that has not been examined in depth before now.