CW2 will resemble the American Revolution, which was a real civil war, with atrocities especially in the South.
Will Canada close their doors?
It will be like the Troubles in N. Ireland.
No one is going to tolerate any type of mass organized armies roaming around, causing chaos.
CW2 will resemble Finland, 1918, in which they still can't decide to call it the Finnish Civil War, War for Independence, or War to Eliminate Traitors. It will resemble the Yugoslav breakup [and bombing of Belgrade by Clinton] and the taking of Grozny during the Soviet Chechnyan War. And there will be atrocities everywhere.
I've been present during two of the XX Century's national revolutions [Cuba,1958 and Rhodesia/Zimbabwe 1979] I know.
Why especially in the South?
While the South has a lot of blacks, much of them are rural blacks, not as prone to violence and hate.
I would think the violence would be mostly in the big cities, especially those with ghettos and slums where a lot of people have no jobs and lots of idle time...
CW2 will go to whoever commands the Warthogs.