The arrival of the Khmer Rouge in April of 1975 marked the beginning of a horrific era in Cambodian history. From 1975 to 1979, more than a quarter of the Cambodian population perished through executions, overwork, starvation, and disease. Sereivudh Ly, who was in his early teens at the time, miraculously survived the Cambodian killing fields. Source: https://www.youtube.com/watch?v=y73JQiAsBnA