John Marks was being shouted at. The public meeting was getting nasty, and he was being abused. But it wasn’t a right-winger or conservative yelling at him. At this time, Liverpool was run by a Communist group called Militant Tendency, who believed in establishing an immediate socialist revolution in Britain. John Marks, they declared, was preventing that revolution by tranquilizing the working classes with heroin. The opiate of the masses turned out to be . . . opiates, literally. Marks was blocking Marx.