I had to refuse to serve some bigots that came into denny's, once. I am not going to tell you what color they were. They were so obvious when they came in the door and started demanding the set-up of the restaurant be changed so they don't have to look at THOSE people. They threatened to sue, and I said fine go ahead. I have security cameras and very many witnesses on my side and a corporation that will back me up if I need. They left; they didn't impress anyone.