That's putting the cart before the horse. Politicians don't create or drive anxiety, they are products of anxiety and the prevailing background culture that existed before them.
Trump or no Trump, current anxiety isn't going to just disappear. It was there before him, it'll be there after him. Only in a certain climate could a Trump-like figure even appear in the first place. If it wasn't Trump himself, it would've been someone else that emerged out of the woodwork.
There will be no "uniter." I said it before and will say it again- this is a structural problem in society that no one man can fix. There won't be some "Nixon figure," that just appears on the scene, snaps his fingers, and like a deus ex machina- all this polarization disappears.
Thinking such is incredibly naive. Sorry, but that's the simple truth, whether you choose to accept it or not.
You're putting words in my mouth.