[Question] How much to worry about the US election unrest?

Political tensions in the US are high. There have been a lot of mass protests in recent months, some of which have turned violent (often after police provocation). Donald Trump and Mike Pence have not to promise to respect the election result if they lose. Many on the left accuse them of plotting to steal the election and/​or promote violence against their political opponents.

Frankly, I don’t consider myself sufficiently well-calibrated on politics to know how much of this is bluster and how much is true cause for alarm. How worried should I be about the US plunging into dictatorship or widespread political violence?

Can people who understand this stuff better than I do please comment?