What If Trump Wins the Election and the Left Rejects the Result?

If you think urban rioting, looting, or "peaceful protesting" is disruptive now, imagine how much worse it may get if President Donald Trump wins a narrow re-election victory.
In 2016, Trump lost the popular vote by two or three million but won states and districts worth 306 electoral votes, against Hillary Clinton's 232. That brought marches and rallies by groups calling themselves the "resistance," and waving "not my president" signs. It brought years of congressional and special prosecutor investigations and an impeachment vote related to the claim that Russia stole the election for Trump.