Thousands of Shias have marched in the southern Iraqi city of Basra to back the new constitution and to mourn 1,000 pilgrims who died in a stampede. Some Shia politicians back a federal region in the south, an idea allowed for in the constitution but opposed by many Sunnis. Tensions have risen since the stampede at a Shia ceremony in Baghdad. A girl was killed in a gun battle between Sunnis and Shias on Thursday near the scene of the tragedy.Full Story