Iraqi police carry flag-draped empty coffins as they march during a demonstration in Najaf, 160 km (99 miles) south of Baghdad, October 7, 2008. Thousands of demonstrators from various Iraq's provinces took to the streets of Najaf to rally for the government to uncover the mass graves of victims killed during ousted dictator Saddam Hussein's regime. The demonstrators also called for the government to take DNA samples to help the families identify the bodies of the victims. REUTERS/Ali Abu Shish (IRAQ)