When people think civil war, they assume it will be the same as the North vs. South kind. But there are many types of warfare that was used in the past 5 years. Tech giants censoring mainly 1 side, Antifa stuff, Trump supporters who are first responders fired, and stuff like this. I'm talking about concepts, an exact same type of war need not happen. Same like comparing vaxx segregation and Jew armbands.
Basically it's those who love America vs. those who don't. And the best part is for those who hate America side, many don't even know that they're being used as "soldiers". They feel like they are on the right side and bash anyone who doesn't have the same belief.
So IMO, we have already been in a civil war for some years now.