90 years ago, the workers and youth of Leeds, led by the Communist Party of Great Britain (CPGB), organised a victorious battle against Oswald Mosley’s fascist Blackshirts. Battered, bruised, and humiliated, Mosley’s forces never dared to march in Leeds again.

90 years on, the Battle of Cable Street should be studied by everyone who wants to fight the far right today. But one part of the story is often missed: not everyone on the left wanted to fight the fascists. Have today’s leaders learned from yesterday’s cowardice?

The Socialist Workers Party and its fronts have held a monopoly on the anti-racist struggle for decades. Yet they have nothing to show for this. We examine why: because of their theoretical mistakes on racism, fascism, tactics, and the method of Marxism.