While it's not impossible for a populist scoundrel to gain the Democratic nomination, I don't think it would be someone like Donald Trump. Democrats are not so much enamored with the idea of someone who knows nothing about politics being better qualified for the job than someone who does.

As far as civil war goes, I think it unlikely. Republican law enforcement officers shoot Republican scofflaws practically every day. For every black person shot there are three whites killed. Mostly republicans as they are more likely to be petty criminals.

I'm basing that on the number of lawmakers and party operatives in each party who are charged with and convicted of crimes.

Good coffee, good weed, and time on my hands...