Statistically, if you put enough stupid people into enough spaces with hateful rhetoric being taught consistently, make them immune to consequences, and reward them when they do things that push towards the civil war you want to have, then eventually either you will completely oppress your country or you will have a civil war.
I could not have said it better myself. I still think it would not become a national level civil war but Minnesota could get messy. Plenty of other states would never let things escalate to this level. All of this could have been avoided by having local law enforcement or worst case the national guard get things under control. Minnesota have conflicting incentives delegate counts driving their bad judgement in addition to their governor being in the hot seat at the moment requiring a distraction.
Or from a movie some of us have seen, someone will do something stupid [1].