The Mensheviks were a faction of the Marxist Russian Social Democratic Labour Party (RSDLP) which split with Vladimir Lenin's Bolshevik faction at the Second Party Congress in 1903. The Mensheviks were led by Julius Martov and Pavel Axelrod.
Leaders of the Menshevik Party at Norra Bantorget in Stockholm, Sweden, May 1917 (Pavel Axelrod, Julius Martov, and Alexander Martinov)