It's always been unclear at best whether Trent Lott had fully come to terms with the results of the Civil War and the Civil Rights movement. Turns out that the answer is: no. This is vile. Get rid of him.
UPDATE: If you're here, you've almost certainly already seen InstaPundit's coverage, which I won't try to top. But let me second Virginia Postrel's call to the press not to let this go. All sorts of silly things have prompted saturation of some public person or would-be-public-person (Cabinet nominees, for example) until he or she was driven from the scene. We know the press knows how to do this sort of thing. Now's the time.