Shi'ite pilgrims beat their chests in a ritual mourning for Imam Hussein as they mark Arbain at the shrine of Hazrat-e Massoumeh, granddaughter of Prophet Mohammad, in Qom, about 120 km (75 miles) south of Tehran, February 16, 2009. Imam Hussein, who was Prophet Mohammad's grandson, died in a seventh century battle. REUTERS/Morteza Nikoubazl (IRAN)