A Cambodian woman burns incense sticks as she prays in front of a stupa containing hundreds of human skulls and bones of victims in Khmer Rouge regime, at Choeung Ek memorial on the outskirts of Phnom Penh, Cambodia, Friday, April 17, 2015. Cambodian main opposition Cambodia National Rescue Party leader Sam Rainsy on Friday led a Buddhist ceremony marking the 40th anniversary of fall of Phnom Penh to Khmer Rouge. (Photo by Heng Sinith/AP Photo)
