The evidence is clear and irrefutable. This Nation is overly polarized between the people that want government to control every aspect of life; the cradle-to-grave nanny-staters and the take-a-punk-to-lunch bunch on one side, and the true Patriots that want as much freedom as is possible in a functional society on the other.
I think the form it will take depends on the reactions by the federal government. It will initially start as a violent action between the rabid communists and fringe-right groups. I predict the FedGov will then crack down hard, trampling all over everyone's civil rights, thus leading to a generalized war.
Our political ruling class had best remember the lessons of our history: you can only shove an American so far before they shove back - often to deadly effect.
Helter Skelter? Take a caffeine break, please.