Marxism predicted a spontaneous revolution by the proletariat, but Leninism insisted on the need for leadership by a vanguard party of professional revolutionaries (such as Vladimir Lenin himself). Marxism predicted a temporary dictatorship of the proletariat, whereas Leninism, in practice, established a permanent dictatorship of the Communist Party. Marxism envisioned a revolution of proletarians in industrialized countries, while Leninism also emphasized the revolutionary potential of peasants in primarily agrarian societies (such as Russia).