Nice summary of American history.
We should not be surprised if there are some violence from the politically disenfranchised. But it will be handled — just like it was in these three previous times.
Another feature is the difficulty of living as a civil war advocate. Living in the woods or couch surfing with “friends” before the authorities catch up is doable only for a very few people. These are hard lives to live. No way to sustain an army in a true civil war.