In every State there is a Democrat presence. Here in Oklahoma, they are in the minority of roughly 33% of the voting population. Out of those, maybe 10% could be radicalized. It would be even worse in Blue States where Republicans are the minority...

IMO, I could see a grouping of like minded individuals in certain areas. Such as a Balkanization within States. Skirmishes would ensue as one side would try to cross into another's boundary...

This is not racial, but more ideological with both sides thinking they are in the right...

Commerce would stop flowing through boundary points. Raids for supplies and pirating of commerce could be wide spread...

It's going to get very ugly. I could see the power grid going down...