Ta Mok
At the beginning of the Khmer Rouge's rule in 1975, there were 425,000 ethnic Chinese in Cambodia. By the end in 1979, there were 200,000. In addition to being a proscribed ethnic group by the government, the Chinese were predominantly city-dwellers, making them vulnerable to the Khmer Rouge's revolutionary ruralism. The government of the People's Republic of China did not protest the killings of ethnic Chinese in Cambodia. The policies of the Khmer Rouge towards Sino-Cambodians seems puzzling in light of the fact that the two most powerful people in the regime and presumably the originators of the racist doctrine, Pol Pot and Nuon Chea, both had mixed Chinese-Cambodian ancestry. Other senior figures in the Khmer Rouge state apparatus such as Son Sen and Ta Mok also had Chinese ethnic heritage.