From his protest against Bebel's exclusion of the anarchists from the Second International in 1893 until his murder in 1919 by the reactionary troops supppressing the Bavarian revolution, Landauer remained a tireless critic of all forms of bureaucratism and an advocate of a decentralized, libertarian socialism. A friend of Buber, his influence also extended into the anarcho-socialist trends of the early Zionist movement and the development of the Kibbutz. Originally published in 1911, For Socialism is a critique of an official Marxism that had become an obstacle to emancipation. It anticipates much of critical theory's vindication of subjectivity, its critique of scientistic ideology, its rejection of a determinist historiography. For Socialism unites themes from a wide range of radical currents that have been hitherto repressed by the guardians of orthodox Marxism.