I can't actually see how a civil war would work mechanically. The right side of the political divide makes up almost all of the armed forces, first responders, and police; their civilians also own most of the guns; and they control the food supply.<p>Beyond all of that, though, my reading of history is that civil wars usually have a geographic component. So, there is usually one region (that may be home to a different ethnic group) which elevates it's political grievances into actual war. But how would that even work in the United States? This isn't like the US civil war where it was the North against the South. This would be geographically isolated urban cores versus their surrounding suburbs and rural areas.<p>And, finally, I don't think Americans have the stomach for casualties. Life is pretty damned good here. So good that we soured on Iraq and Afghanistan after a few thousand casualties (where we never even had to look at dead bodies, just flag-draped caskets). Somehow I don't see us being okay with the corpses of our dead children littering the streets of Los Angeles or Manhattan.