To the previous poster, I find it deplorable that you conveniently left out the acts of notorious Missouri bushwackers aside from Quantrill (for example, Archie Clement).
For every Jayhawker raid there was certainly one from pro-slavery bushwackers into Kansas. I agree that many Jayhawkers were most definitely "unsavory and dishonest", but their actions were certainly not one-sided. Those from both Kansas and Missouri plundered and murdered equally with the unfortunate climax in Lawrence. When you directly blame the Jayhawkers only for the war, you are omitting half of the accurate history.