It is because I disagree with their idea of history. It's like you, who prefer to attach slavery as the primary cause to the War and no matter what we type you prefer to believe what you were taught.

But my main contention was the Border Ruffians question. Jim Lane and his Kansas Red Legs were ten times worse than Quantrill and it was Lane who started the Border disputes by crossing into Missouri first and killing pro-slavery people. Lane and his "riffians burned Cole Younger's mother out twice before Younger retaliated,( The Devil knows how to Ride, by Edward Leslie), after Younger started riding with Quantrill they burned her out twice more, same book. The first time they killed his father, a doctor, if I remember the story correctly.