Shiite faithful pilgrims gather at the Imam Hussein Shrine in Karbala, for Arbaeen, which marks the end of the 45 mourning period after the anniversary of the 7th century martyrdom of Imam Hussein, the Prophet Muhammad's grandson, in Karbala, 80 kilometers (50 miles) south of Baghdad, Iraq, Friday, Jan. 13, 2012. (AP Photo/Hadi Mizban)

Photo by: Hadi Mizban

Shiite faithful pilgrims gather at the Imam Hussein Shrine in Karbala, for Arbaeen, which marks the end of the 45 mourning period after the anniversary of the 7th century martyrdom of Imam Hussein, the Prophet Muhammad's grandson, in Karbala, 80 kilometers (50 miles) south of Baghdad, Iraq, Friday, Jan. 13, 2012. (AP Photo/Hadi Mizban)