Instapundit combines the themes of two Trump presidency after one year columns to explain why he's so hated in Washington.
Actually, and I think this is actually what goes to the horror of the political class, Trump reflects exactly who you are. Everything they hate about him, from the nonstop concern with what the press is saying, to the willingness to override traditions to do what he wants, is a characteristic that our political class has had for decades. He just does it with insufficiently-creased pants.
If our media and political class weren’t horrible, Trump would have stayed in the hotel and TV business, and the people who hate him now would have happily attended his parties and taken pictures with him. But he is forcing them to acknowledge, at least unconsciously, just how horrible they are and they can’t deal with that.