NPR: All Things Considered. The film First They Killed My Father begins in 1975 Cambodia, during the rise of the Khmer Rouge. The hard-line communist regime aimed to deport an entire nation into the countryside and form an agrarian utopia — but their experiment failed. People were forced to work, and they were also tortured, starved and executed. In the end, around a quarter of the country’s population — roughly 2 million people — died.