Leader of the Third Reich in Nazi Germany (1933-1945). When he dropped out of school at 14 Hitler moved to Vienna and soaked up extreme Nationalism. Hitler thought by killing of inferior humans, the strong would survive and the human race would be more intelligent. He basically used a fucked up version of Social Darwinism to ensure the Germans would survive.
Hitler did not just kill 6,000,000 men women and children of the Jewish Religion, but killed over 21,000,000 people that were either retarded, gypsies, handicapped, aged, sick, prisoners of war, forced laborers, camp inmates, critics, homosexuals, Jews, Slavs, Serbs, Czechs, Italians, Poles, Frenchmen, Ukrainians, and so on. He also used public speaking (That's how he got chancellor) to actually make Germany think that Jews caused the economic depression from WW1.
Adolf Hitler kills people he doesn't like, Period.