 Libertarian Marxism includes such currents as Luxemburgism, council communism, left communism, Socialisme ou Barbarie, the Johnson–Forest tendency, world socialism, Lettrism/Situationism and autonomism/workerism and New Left.Libertarian Marxism has often had a strong influence on both post-left and social anarchists.Notable theorists of libertarian Marxism have included Anton Pannekoek, Raya Dunayevskaya, CLR James, Antonio Negri, Cornelius Castoriadis, Maurice Brinton, Guy Debord, Daniel Guérin, Ernesto Screpanti and Raoul Vaneigem.