I used to wonder about Germany and Hitler, too. Then remembered the Brownshirts. I used to wonder about Reconstruction after the Civil War and the carpetbaggers. History, when you get a glimpse of the Evil in human hearts, all makes sense. Not talking about logic here, but about Origianl Sin. It is not heaven down here.
Some of my ancestors were literally burned out of AL during Reconstruction for resisting. The father disappeared in AR, the wife and children went GTT (gone to Texas). History does not record much of this, but it happened. And it is still oral tradition in many places in TX. Whole communities moved then because of it.