One would think Chao Ponhea Yat High School is just another regular school. On entering the gates, it looks like any high school, with five buildings that face the well-maintained lawns. Note: viewer discretion is advised as some of you may find the contents and images distressing. It is now called Tuol Sleng Genocide Museum. However, between 1976 and 1979, the Khmer Rouge, who had overrun Phnom Penh had named it S-21, or Security Prison 21. They immediately set about converting it into a prison that would hold an estimated 20,000 inmates, including men, women, children and infants. The adults and children were photographed and then interrogated and tortured until…