What would take away my right to judge a person? What gives me the right to judge a manz artistic work but not his actions. If I think Van Gogh is a nut for cutting off his ear I can believe and express that, as I can call VON Trier an idiot for statements he made in public. Or I can call him a genius, either way it's my right.
I repeat you can like it or not, but judge a person? Are two different things.
But of course today most people believe they can judge others by their actions and sayings, as if they possessed the recipe for how to behave determined person. I do not do that, I do not judge a person by that sort of thing (statements and those sort of things). And I do not think anyone has that right.
Different is judge the work of a person, if someone says that Von Trier's work is terrible, or whatever it was, is his right as a spectator of his work. But judge him as a person without really knowing him and insult him is really stupid and lazy, but something so simple and easy to do.