This document discusses several totalitarian leaders throughout history including Vladimir Lenin, Stalin, Mao Zedong, and Hitler. Lenin introduced a mixed economy model in the Soviet Union combining aspects of communism and capitalism. Stalin carried out purges of enemies and implemented 5-year economic plans. Mao Zedong killed political threats in China and caused the deaths of millions during the Great Leap Forward and Cultural Revolution. Hitler wrote Mein Kampf in prison and used the Reichstag fire to consolidate power as the leader of Nazi Germany.