Why did Pol Pot kill his people?

Background and context to the question Pol Pot (Real name Saloth Sar) was the leader of the Khmer Rouge or Red Khmer regime. It ruled Cambodia from 17 April, 1975 until January 1979, when Vietnamese army overthrow the regime. read more

The Khmer Rouge arrested and killed all those whom it considered “NOT PURE PEOPLE”. According to them previous regime, educated, capitalist and city people were not pure. read more

Pol Pot was a political leader whose communist Khmer Rouge government led Cambodia from 1975 to 1979. During that time, an estimated 1.5 to 2 million Cambodians died of starvation, execution, disease or overwork. read more