Yeah, I see a whole lot of media parallels to Nazi Germany, but the two historical analogues that really pop to mind for me are the French Revolution and the Breakup of Yugoslavia. Both of which ended in
slaughter - the Napoleonic Wars for the former and ethnic cleansing for the latter. People are crying dictatorship now, but I don't see that being the ending here; rather, I see it as being war and death on a massive scale.
The other thing to remember about the French Revolution was that nearly all the revolutionaries who came to power during it were dead by the end of it. The folks who are crying "We're in power now, suckas!" are being extremely stupid. Power doesn't last long at times like this.
The other thing that scares me is that the best place to be in all those historical times of crisis was an ocean away from the place where the crisis starts. But that doesn't work today; we have weapons with global reach that can level whole cities in 30 minutes. If the U.S. disintegrates nowhere on earth is safe.