This work is replete with all kinds of labels hung on all those who disagree with the so-called "general line of the party," personified by Stalin and his entourage. The author sees everywhere a certain right-wing danger that can lead to a revision of Marxism. He advocates a radical solution to the class issue, and any attempts by the Social Democratic parties to compromise within the framework of the political struggle are declared a departure from Marxism, a betrayal of the working class.