Shi'ite Muslims flagellate themselves during a ceremony to mark the religious ritual of Arbain, in the northern Indian city of Lucknow January 15, 2012. Shi'ite Muslims commemorate Arbain, to mark the end of a 40-day period of mourning for the Imam Hussein, Prophet Mohammad's grandson, who died in AD 680. REUTERS/Adnan Abidi (INDIA - Tags: RELIGION SOCIETY TPX IMAGES OF THE DAY)