Due to the fact that communism in Russia made a revolution, came to power, created the USSR and ruled the country until the end of the 20th century, the study of Russian Marxism as part of the left movement in Russia in world historiography is in a special position and this position should be recognized extremely unfavorable, despite the huge number of published sources, special literature and archival publications. Despite a long history and a full-fledged renaissance of studies of other parts of Russian leftism - populism, non-nationalism, socialist revolutionaries, social democrats of the Mensheviks, anarchists, constitutional democrats closely adjacent to the socialists and others - the history of early Russian Marxism and Bolshevism has not yet survived an adequate renaissance...