The khmer rouge was a government that killed millions of people in
cambodia
vietnam
philippines
myanmar

Cambodia
The word Khmer Rouge used to refer to a succession of communist parties in Cambodia which evolved into the Communist Party of Kampuchea (CPK) and later the Party of Democratic Kampuchea.The Khmer Rouge period (1975–1979) refers to the rule of Pol Pot, Nuon Chea, Ieng Sary, Son Sen, Khieu Samphan and the Communist Party of Kampuchea over Cambodia.The Khmer Rouge's ideology combined elements of Marxism with an extreme version of Khmer nationalism and xenophobia.During the Khmer period estimated the death toll at between 740,000 and 3,000,000, most commonly between 1.4 million and 2.2 million, with perhaps half of those deaths being due to executions, and the rest from starvation and disease.