Thousands of Muslim Shiite pilgrims gather at the Imam Musa al-Kadhim Shrine in Baghdad

Thousands of Muslim Shiite pilgrims gather outside of the Imam Musa al-Kadhim Shrine to partake in a ceremony commemorating the death of the Imam, who died 12 centuries ago, in Baghdad on July 28, 2008. At least 20 Shiite pilgrims were killed today in three suicide bombings as they headed to the shrine. (UPI Photo/Ali Jasim)