Today, April 7, is the official anniversary of the start of the 1994 genocide in Rwanda. Probably a half million or so people — estimates range wildly — were murdered in just 100 days. Most of the victims were Tutsis, though a number of moderate Hutus also were killed. Hundreds of thousands of women were raped. The brutality was up close and personal, usually via guns, machetes, and even clubs. The murderers often were neighbors. Victims were hunted down like human prey. Those who sought shelter in churches, schools, hospitals, and elsewhere found no refuge. The bloodshed went on until there seemed to be no one else to kill.