Mourners pray over the coffins of Sunni cleric Khalid al-Jumeili, an organizer of the protest camp in Fallujah, and his assistant Eid al-Alwani during the funeral in Fallujah, 40 miles (65 kilometers) west of Baghdad, Iraq, Sunday, Dec. 1, 2013. Though in a drive-by shooting, police said, Al-Jumeili was killed, the number of Iraqis slain "execution-style" surged last month, the U.N. said Sunday, raising fears of a return of the death squads that killed thousands during the darkest days of sectarian violence that followed the U.S.-led invasion. (AP Photo/Bilal Fawzi)