Surviving Cambodia's 'Killing Fields'

Extremist communists, the Khmer Rouge took power in 1975 and began a social engineering project displacing millions to forced labour camps, and committing class genocide. Conditions in the camps were so appalling they became known as 'the killing fields'. Sokphal Din survived four years in one and told Rebecca Kesby what it was like.

(PHOTO: CHOEUNG EK, CAMBODIA - 1993/02/01: Skulls are piled up at a monument situated outside Phnom Penh to serve as a constant reminder of the genocide under the Khmer Rouge during the Pol Pot years.. (Photo by Peter Charlesworth/LightRocket via Getty Images)