Sure, but look at the recent protests. Armed men protesting state level governments openly egged on by the whitehouse and organized by rich political dark money.

There was a distinct period before the armed attack of hostilities between the federal government and the southern states, e.g. Nullification crisis and the “tariff of abominations”.

I’m not sure it particularly matters which side started it, you still had basically open violent conflict between democrats and republicans for decades, before and after the war.