The John Wilkes Booth Pistol Club killed Lincoln. And Lincoln's election was a lot harder on the South than his death. Too bad he did not die 5 years earlier. In that event, we probably would not have a multi-trillion dollar federal budget and single payer government run health care.
And if some weasel slacker had assasinated Jeff Davis then he would have been lionized by Northerners and Southern apologists to this very day.