Forty years after S-21, killing fields and death camps still exist
A tourist looks at skulls and bones of more than 8,000 victims of the Khmer Rouge regime displayed at Choeung Ek, a "Killing Fields" site located on the outskirts of Phnom Penh July 2, 2015. (photo credit: REUTERS)ByJOSHUA GELERNTERUpdated: