Shi'ite pilgrims beat their chests in ritual mourning for Imam Hussein, Prophet Mohammed's grandson who died in a seventh century battle, as they mark the religious ceremony of Arbain at Imam Abbas shrine in the holy city of Kerbala, about 80 km (50 miles) south of Baghdad, February 5, 2010. REUTERS/Mushtaq Muhammed (IRAQ - Tags - Tags: RELIGION SOCIETY IMAGES OF THE DAY)