I understand what you are saying. Generally one buys art because it speaks to them. The buyer appreciates what the artist did or the feeling that are emoted when viewing it. But I personally could not look at the art as I had before the artist made a point of publicly insulting me, my father, and all who voted for my father. I could no longer enjoy looking at it. I would not want my children growing up and looking at it, knowing that the artist hated their mother and grandfather.
I understand what you are saying, and my post was mostly what I would do publicly as I think it would hurt him worse. After all, there are a lot of Trump supporters that can afford fine art. These people need to look as small as they are.