I can see some protest popping up whichever way things go but I can't really see it going to a full on civil war because like you said where would be the flash points? I just feel like people will bunker down for the most part and have to go to work the next day to try to keep up with all the bills.
I could see the cities being pretty destroyed. Kind of an ramped up Black Lives Matter / Antifa scenario. I could see the Proud Boys and Militia groups fortifying but I think to avoid a civil war they will start WW3 as a distraction. Our controllers might launch Nukes at Russian targets.
Things can ramp up fast though when things go out of control like the song depicts! lol