Here is the top 10 genocides of the 20th century:
- China, under Mao Ze-Dong, 1949-50 and 1966-69: 50 million to 78 million people
- Soviet Union, under Jozef Stalin, 1932-39: 23 million
- Europe, under Adolph Hitler, 1933-1945: 12 million
- Congo, under Leopold II of Belgium, 1886-1908: 8 million
- Japan, under Hideki Tojo, 1941-1944: 5 million
- Armenia, under Turkish rule, 1915: 1.8 million (Armenians, Assyrians, Greeks)
- Cambodia, under Pol Pot, 1975-79: 1.7 million
- North Korea, under Kim II June, 1948-1994: 1.6 million
- Ethiopia, under Menghistu, 1975-78: 1.5 million
- Biafra, under Yakubu Gowon, 1967-1970: 1 million







