You remember this guy, right? He got up and spoke at the Democratic National Convention, the Gold Star father of a dead U.S. Marine, blasting Donald Trump for daring to question the patriotism of Muslim Americans. Of course, Trump never questioned any such thing. He made the fairly obvious observation that most terrorists are Muslims, which is not even in the same universe with tarring the patriotism of Muslims in general - but never let it be said Democrats will pass up the chance to craft a totally dishonest narrative if they think it will help them.
Trump, who counterpunches everyone regardless of who they are, went after Khan on Twitter, and we were told this sort of indiscipline was the reason Trump couldn't possibly win the election. Most people believed that was true until very late at night on November 9.