A leading figure in the Russian Revolution of 1917 was Vladimir Lenin. Lenin played a central role in the Bolshevik faction, advocating for a radical approach to Marxism. He was instrumental in overthrowing the provisional government during the October Revolution, establishing a socialist state in Russia. Lenin's policies shaped the course of Soviet history and his ideological legacy influenced communist movements worldwide, emphasizing the need for a vanguard party and the dictatorship of the proletariat.