What would you do?

Nothing. You can't do anything to help people like that.

Should've called the Park Police. They don't frick around with that kind of stupid idiot

Well, I saw the sign and just shook my head, however, my wife told him that he should be ashamed. He then proceeded to tell her to f'ing go home, so i turned around and asked, "what the hell you just say"? he then told me to f off, Well that opened a coonazz dialogue session between him and I. Basically I told him that he wouldn't stand and tell me that to my face, so he kept sitting there. I called him a few choice words and left. On the other hand, He was the only anti-trump person we saw in DC. We saw no protests or any other negativity to current admin.

That's exactly what I told my wife!