This is the nature of our democracy, however.
One could argue that one has a duty to educate, but you cannot force knowledge and reason upon people who do not wish it.
I saw much of the same on the brexit vote - one that stood out was someone i'd always thought was an intelligent man (he used to run a substantial investment bank), who I found screaming, froth-flecked, in my face about how I was a traitor for not voting for freedom, how I loved evil, how leaving the EU was a vote for freedom. He couldn't elaborate on anything, he could just shout louder. It doesn't matter to him even, he'll be dead soon. One of his sons is a us native with British citizenship working on an eu research grant in Scandinavia. So strong was his irrational hatred he voted to fuck his own son over. Oh, and this guy is your ivy league elite, as were many of the other codgers in the room with the same groundless hate, so there goes the argument of this piece.
The trimp/brexit voters aren't disillusioned youth, aren't the left behind, they're just your usually older traditional values crowd.
That all said, like it or lump it. You are in the same boat as these people, they are people, and they represent the majority of people.
I've spent most of my life trying to be tolerant of incredible stupidity, and I don't know if I'll ever fully succeed, but all you can do is grit your teeth, and keep quiet. You won't change their minds with any rational discourse, only emotional.