Khmer Rouge Shadows: Cambodia's Genocidal Past Still Haunts its Present.' In 1975, the Khmer Rouge regime rose to power. Nearly four years later, the entire infrastructure of the country was destroyed. Millions were tortured and killed in the most lethal per capita genocide of modern times, a darkness that has haunted the country for the last 30 years. But the darkness may be lifting as United Nations Chief Prosecutor Robert Petit attempts to heal a broken country.