this is phnom penh today, full of life, bustling, families together, young and old.this it is hard to imagine thatjust four decades ago all seemed lost, destroyed. in 1975, the khmer rouge, a radical communist movement, took power, forcing millions from the cities into the countryside. this was their year zero, an attempt to create a walled utopia. it was easy to find yourself an enemy of angkor, as they called themselves. practising religion, showing emotions or even wearing colour could be a death sentence. in four years over two million people were killed, a quarter of the population. in 1979, weakened by infighting, the khmer rouge were driven from power by invading troops from neighbouring vietnam. action! screaming. a0 years later, a new film about those times, first they killed my father is breaking new ground. there have been films made about the genocide before, but not like this. it is funded by one of the world's biggest content distributors, netflix, for a global audience. but it's filmed entirely in cambodia with cambodian actors in the khmer language. w