http://www.scaruffi.com/politics/dictat.html
The worst genocides of the 20th Century
Jozef Stalin (USSR, 1934-39) 13,000,000 (the purges)
Adolf Hitler (Germany, 1939-1945) 12,000,000 (concentration camps and civilians WWII)
Mao Tze Dong (China, 1966-69) 11,000,000 (cultural revolution)
Hideki Tojo (Japan, 1941-44) 5,000,000 (civilians WWII)
Pol Pot (Cambodia, 1975-79) 1,700,000
Kim Il Sung (North Korea, 1948-94) 1.6 million (purges and concentration camps)
Menghitsu (Ethiopia, 1975-78) 1,500,000
Ismail Enver (Turkey, 1915) 1,200,000
Charles DeGaulle (Algeria, 1954-1962) 1,000,000
Yakubu Gowon (Biafra, 1967-1970) 1,000,000
Leonid Brezhnev (Afghanistan, 1979-1982) 900,000
Jean Kambanda (Rwanda, 1994) 800,000
Suharto (East Timor, 1976-98) 600,000
Yahya Khan (Pakistan, 1971) vs Bangladesh 500,000
Savimbi (Angola, 1975-2002) 400,000
Mullah Omar (Afghanistan, 1986-2001) 400,000
Idi Amin (Uganda, 1969-1979) 300,000
Benito Mussolini (Ethiopia, 1936; Yugoslavia, 1945) 300,000
Mobutu Sese Seko (Zaire, 1965-97) ?
Charles Taylor (Liberia, 1989-1996) 220,000
Foday Sankoh (Sierra Leone, 1991-2000) 200,000
Milos Milosevic (Yugoslavia, 1992-96) 180,000
Michel Micombero (Burundi, 1972) 150,000
Saddam Hussein (Iraq, 1987-88) 100,000
Hassan Turabi (Sudan, 1989-1999) 100,000
Jean-Bedel Bokassa (Centrafrica, 1966-79) ?
Richard Nixon (Vietnam, 1969-1974) 70,000 (vietnamese civilians)
Papa Doc Duvalier (Haiti, 1957-71) 60,000
Hissene Habre (Chad, 1982-1990) 40,000
Nikolaj Lenin (USSR, 1917-20) 30,000 (dissidents executed)
Francisco Franco (Spain) 30,000 (dissidents executed after the civil war)
Lyndon Johnson (Vietnam, 1963-1968) 30,000
Hafez Al-Assad (Syria, 1980-2000) 25,000
Milosevic (Bosnia, 1995) 20,000
Khomeini (Iran, 1979-89) 20,000
Paul Koroma (Sierra Leone, 1997) 6,000
Osama bin Laden (worldwide, 1991-2001) 4,000
Augusto Pinochet (Chile, 1973) 3,000
Efrain Rios Montt (Guatemala) 2,000
Marcos (Philippines) ?