4. Mourning of Muharram Some groups of Shia Muslims join in an ardous practice that involves body whipping with special chains that have razors and knives attached. They do this to commemorate the death of Husayn ibn Ali, a grandson of their messiah Mohammad. This tradition is practiced by all age groups; in some regions the children are forced by their parents to take part. This custom is observed by the people of Bahrain, India, Lebanon, Iraq and Pakistan.