It’s hard to describe the way I felt at Tuol Sleng Genocide Museum and later at the Killing Fields just outside Phnom Phen city, Cambodia. Certainly I was incredibly sad, appalled, horrified and sickened. The hundreds of mug shots of now-dead people staring hopelessly out at us from the past were truly chilling. In 1975, the Khmer Rouge led by Pol Pot overthrew the pro-Western government of Cambodia and embarked on a process of agrarian social engineering, eliminating the middle and upper classes and forcing nearly everybody that remained into working in the rice fields. Money was abolished, as were…