As a northerner moving down to the DC area after college, I was surprised at all the southerners I would run into who would pull that "war of northern aggression" bullshit. It amazed me. I had never been exposed to that before. The war was over a century ago and these yahoos were still all wrapped up in it. It was something I never gave a second thought. It lived in the same compartment in my brain as the French and Indian War, the Revolutionary War, and the War of 1812. Old dusty history with no relevance to today.
Now that I've been down here 20+ years, I like it. It's interesting history and by keeping it alive they amuse me.
Check out this reenactment I went to last fall.