1> The Khmer Rouge, or more formally, the Communist Party of Kampuchea, led by Pol Pot, Ta Mok and other leaders, organized the mass killing of ideologically suspect groups, ethnic minorities like the ethnic Vietnamese, Chinese (or Sino-Khmers), Chams and Thais, former civil servants, former government soldiers, Buddhist monks, secular intellectuals and professionals, and former city dwellers. Khmer Rouge cadres defeated in factional struggles were also liquidated in purges. The number of the victims is estimated at approximately 1.7 million Cambodians between 1975-1979, including deaths from slave labour. Read more at http://en.wikipedia.org/wiki/Genocides_in_history#Cambodia 2> Mao Ze-Dong (China, 1958-61 and 1966-69, Tibet 1949-50) 49-78,000,000 Jozef Stalin (USSR, 1934-39) 13,000,000 (the purges) Adolf Hitler (Germany, 1939-1945) 12,000,000 (concentration camps and civilians WWII) Hideki Tojo (Japan, 1941-44) 5,000,000 (civilians in WWII) Pol Pot (Cambodia, 1975-79) 1,700,000 Kim Il Sung (North Korea, 1948-94) 1.6 million (purges and concentration camps) Menghistu (Ethiopia, 1975-78) 1,500,000 Ismail Enver (Turkey, 1915) 1,200,000 Armenians Yakubu Gowon (Biafra, 1967-1970) 1,000,000 Leonid Brezhnev (Afghanistan, 1979-1982) 900,000 Jean Kambanda (Rwanda, 1994) 800,000 Suharto (East Timor, West Papua, Communists, 1966-98) 800,000 Saddam Hussein (Iran 1980-1990 and Kurdistan 1987-88) 600,000 Yahya Khan (Pakistan, 1971) vs Bangladesh 500,000 Fumimaro Konoe (Japan, 1937-39) 5