Leon Trotsky politically marginalised by Stalinism, Trotsky continued to argue for a united front against fascism in Germany and Spain. According to Joseph Choonara of the British Socialist Workers Party in "International Socialism", his articles on the united front represent an important part of his political legacy. Leon Trotsky Leon Trotsky (; born Lev Davidovich Bronstein; – 21 August 1940) was a Russian revolutionary, Marxist theorist, and Soviet politician whose particular strain of Marxist thought is known as Trotskyism. Initially supporting the Menshevik Internationalists faction within the Russian Social Democratic Labour Party, he joined the Bolsheviks ("majority") just before the 1917 October
Lev Chernyi his revolutionary activities. On his return from Siberia in 1917, Chernyi enjoyed great popularity among Moscow workers as a lecturer, and was at this time one of Russia's leading individualist anarchists and one of anarchism's main ideologues. He was the Secretary and leading theorist of the Moscow Federation of Anarchist Groups, which was formed in March 1917 after the abdication of Tsar Nicholas II and was primarily concerned with disseminating propaganda to Moscow's poorer classes. A personal acquaintance of Lev Kamenev and other leading Bolsheviks, Chernyi denounced the nascent Russian Soviet Republic at a rally on March 5, 1918, declaring