I think the greatest "wrong" is him becoming president, despite not having a popular vote.
But that's not even a legal wrong, obviously. I think most people don't think of Trump as having comitted any one big crime, but rather, they just intensely dislike his policies and personality.
The question is this: If he was the same as he is now, but instead of rich and powerful, just a normal person, but with the same opinions, would you be his friend? A close, personal friend? Would you have beer with him? Or would you avoid him?
Many people would avoid him, and see him as a very sleazy person.
But his actual crimes? I've got no idea. I haven't heard of anything worthy of true scorn or fire.