The year 1970 thus marks the beginning of almost two decades of severe repression of the Chinese minorities in Cambodia. It was after this point that Cambodian authorities started forcing the closure of Chinese schools and newspapers, requiring the Chinese to carry special identity papers, imposing special taxes on the Chinese and moving towards denying them Cambodian citizenship. While the Khmer Rouge regime appeared to have a more ‘tolerant' ethnic policy initially, it continued to discriminate against the Chinese once it had completed its takeover of Cambodia. The continued discrimination, however, now rested on class rather than ethnic grounds; since the majority of urban Chinese were traders, they were classified as ‘capitalists' by the revolutionary regime. While there is no evidence that the Chinese were particularly targeted in the Khmer Rouge purges, their population in Cambodia was probably reduced by half in the four years of Khmer Rouge rule; it seems that there was an increased number of anti-Chinese events just prior to the Vietnamese invasion which brought an end to the Pol Pot regime.