I have a very strict rule. If he comes on TV, I change channels instantly. If he's doing something where he is on every channel, I turn off the TV.
To me, it's the same as when the police turn their backs on those who get other policemen killed through their stupidity.
If the 75% of people in the US who say he is doing a terrible job did the same thing, it would get the attention of all of the television stations and they would quit carrying the idiot when he wants them to. It's not like you're missing anything that's truthful or important.