BAGHDAD, Iraq — The images were shocking. A trench with piles of clothed bodies packed tightly together. Men, women, little children. Even unborn children. Some blindfolded. Some with their hands bound. All slaughtered in cold blood by the henchmen of former Iraqi dictator Saddam Hussein (search). All of this horror was discovered in another mass grave in the desert wasteland of northwestern Iraq, near the town of Hatra. It was discovered a year ago, and only now is it being carefully and scientifically excavated by the Regime Crimes Liaison Office (search). This agency, part of the U.S. Justice Department, is...