A forensic expert holds up part of a human skull found in a mass grave some 10 kilometers from the Iraqi central shrine city of Najaf on May 19, 2014. The bones of 27 people, believed to be victims of the 1991 Shaaban Revolt, will have their DNA tested for identification purposes. The Shaaban Revolt was a series of popular rebellions in northern and southern Iraq in March and April 1991 after the Gulf War that was quashed by the regime of then president Saddam Hussein. By Haider Hamdani/AFP/Getty Images.