Anti-bolshevism may refer to: Council communism, a current of socialist thought Anti-communism, opposition to communism Anti-Leninism, opposition to the political philosophy of Vladimir Lenin Anti-Stalinist left, a leftist current opposed to the political philosophy of Joseph Stalin Anti-Sovietism, opposition to the government of the Soviet Union Ultra-leftism, a term widely used against highly sectarian communist groups of which many are anti-Leninist