In this novel, Revueltas confronts the question that history posed to communists: whether the 20th century should be designated the century of the October Revolution or the century of the Moscow Trials. Errors, therefore, is one of the great communist novels of anguished political and ethical interrogation and critique. On one side of the scale, extraordinary militants like Olegario Chávez and Eladio Pintos; on the other, the party's priests. The backdrop is the trials and purges in the USSR, a strike in Mexico City, the murder of a moneylender, proletarians in struggle, the threads woven by the fascist leader, and the Goyaesque figures of the pimp, the dwarf, and the whore. A great novel in which history bears the face of each of the unforgettable characters.