Freedom of expression is supposed to be a cornerstone of democracy. All views, even the most disagreeable, must be allowed to compete in an open marketplace of ideas. Capitalism, we are told, is the only system capable of facilitating such tolerance; communism would crush dissent beneath the iron heel of conformity and the ‘party line’. Yet, as we write these words, students and academics are being beaten and arrested on dozens of campuses across capitalist America for their ‘unacceptable’ views. Communists, meanwhile, are the only ones mounting a consistent defence of free speech – from our own class perspective.