This aerial photo shows Shiite faithful pilgrims gather between, the holy shrine of Imam Hussein, top, and the holy shrine of Imam Abbas, bottom, for Arbaeen in the Shiite holy city of Karbala, 50 miles (80 kilometers) south of Baghdad, Iraq, Saturday, Dec. 13, 2014. The holiday marks the end of the forty day mourning period after the anniversary of the 7th century martyrdom of Imam Hussein, the Prophet Muhammad's grandson.
Hadi Mizban Associated Press