The exact numbers are unclear, but it is believed that the Khmer Rouge's regime of terror (1975-1979) caused the death of at least 1.7 million Cambodians - almost one-third of the country's population. In the remote place where 48-year-old Sochan Pen now grows rice, there was once a killing field. She tells us that decomposed bodies are still being found, and villagers fear tha...