Communism, derived from the Latin 'communis,' aims to create a classless society where wealth and property are collectively owned, eliminating socioeconomic disparities. The ideology, championed by Karl Marx and outlined in the Communist Manifesto, gained practical implementation after the Russian Revolution in 1917, leading to significant social reforms under Lenin and later Stalin, although often diverging from Marxist principles. The movement has faced criticism and challenges, particularly regarding the suppression of dissent and the failures to maintain its core ideals of equality and worker rights.