There is no need to tiptoe gingerly around this topic: Maurice Clemmons, who was shot and killed as authorities tried to apprehend him for the shooting deaths of four Washington police officers - is former Arkansas Gov. Mike Huckabee's Willie Horton. Horton, you might recall, is the convicted killer who raped a woman while wrongly released as part of a prison furlough program supported by former Massachusetts Gov. Michael Dukakis - thus helping to torpedo the 1988 Democratic presidential nominee's bid for the White House. The Clemmons' story likewise should kill any chance of Huckabee winning, should he run in...