<human>:  Where was the movie, ‘The Killing Fields of Choeung Ek’ set?
<bot>: The movie was set in Cambodia, which was then a part of the French colonial empire. The Killing Fields of Choeung Ek is a Cambodian genocide memorial park, located in Phnom Penh. The park is dedicated to the victims of the Khmer Rouge regime, which ruled Cambodia from 1975 to 1979.