"Socialism or Barbarism" considered the USSR to be an example of state capitalism and gave its support to anti-bureaucratic revolts in Eastern Europe — especially the uprising in Budapest in 1956. Differences of opinion brought about a schism within Socialism or Barbarism, and Lefort sided with Henri Simon, one of the founders of the group Informations et Liaison Ouvrières (Workers' Information and Liaison)—later renamed "Informations et Correspondance Ouvrieres" (Worker's Information and Correspondence)—in 1958. That year he abandoned the idea and ideology of political revolution and ceased his militant activism.