It is a pity that there are such figures around. I think you should earned respect for the fact that you took care of finding all the money for the show yourself.
Maybe it's good idea to invite a Trump fan to speak in your show. To also hear the other side of the story.
You just seem like a really nice and wholesome person. While some political discourse can have a positive effect on everyone involved, I somewhat hesitate to believe that would go over so well. But you my friend give me hope.