An important leader in the Bolshevik revolution was Leon Trotsky, who also fell victim to the purge. Leon Trotsky worked with Lenin before his death and was the founder and leader of the Red Army. Trotsky was a key part of the revolution and was working his way up however, Stalin did not allow him. “Trotsky was the first, and on the face of it the most dangerous of Stalin’s opponents”. When Stalin was put in power, Trotsky did not agree with his policies and soon spoke out against him. Trotsky was a part of the left opposition and in 1929 was deported from Russia because he wanted more bureaucracy in the Soviet Union and opposed the policies of Stalin. Trotsky moved from different countries until he was invited to go to Mexico. Trotsky did not stop opposing Stalin and remained politically active in exile. Trotsky established his own beliefs that were soon called Trotskyism, which was similar to Marxism and opposed the theories of Stalinism. Stalin regretted sending Trotsky out of the Soviet Union because he could not be purged. Stalin could get rid of all his old Bolshevik opponents except Trotsky since he was on the other side of the world. As Trotsky was actively opposing Stalin and his views, he soon crossed the line. Stalin had enough of him and in 1940; Stalin had a soviet agent go to Mexico and assassinate Trotsky and finally had him silenced.