Feeling compassion for Trump is beyond my capabilities. But I take it as an article of faith that everyone, including him, has pure, and perfect Buddha nature. In some people that nature is so deeply buried under karmic garbage that it is impossible to see. In such cases, Our first priority has to be to protect other people from him, and treat him as nothing more than an evil and a danger. But that does not require us to believe that’s all there is to him. It just requires us to act that way. Remember Gollum, in lord of the rings