Joseph Stalin was politically ambitious and Stalin and became secretary general of the Central Committee of the Communist Party in 1922. Vladimir Lenin was a Bolshevik and the leader of the Russian Social-Democratic Worker's Party until his death in 1924. The Bolsheviks drew upon the ideas of Karl Marx. After the death of Lenin, a power struggle occurred over who would be the next party leader. Joseph Stalin claimed power and became dictator of the Soviet Union. Stalin's collectivization of Soviet farms drew upon the ideology of Marxism. The Five-Year Plans was put in place to direct economic and industrial output. Those not willing to go along with his collectivization plan were executed or sent Gulags, prisons that utilized harsh forced labor programs. In the end, there were 17 million people murdered in WWI and over 20 million people murdered. The destruction in Europe was massive, as well.