Aspen Ideas Festival: The US role in stopping genocide and mass slaughter

Rwanda genocide memorial
A survivor from the 1994 Rwandan genocide lights candles at a mass grave in Nyamata, Rwanda on April 6, 2004 -- marking the 10th anniversary of the genocide that began on April 7, 1994 and in which 500,000 people were killed.
Sayyid Azim/Associated Press