Whose slogan destroy the foreigner?

"Destroy the Foreigner" was a slogan used by the Khmer Rouge regime in Cambodia from 1975 to 1979. The slogan was part of the regime's xenophobic policies, which sought to purge the country of all foreign influence. As part of this policy, the Khmer Rouge carried out a genocide that killed an estimated 1.7 million Cambodians, many of whom were ethnic Vietnamese or Chinese.