Police found at least 72 bodies killed by gunfire in Baghdad in the past 24 hours — a gruesome wave of apparent sectarian reprisal attacks in some of the capital’s most dangerous neighborhoods, officials said Tuesday. The bloodshed — the second wave of mass killings in Iraq since bombers destroyed an important Shiite shrine last month — followed weekend attacks in a teeming Shiite slum in which 58 people died and more than 200 were wounded. Full Story