I believe you are incorrect, Frank. A proprieter of a privately owned establishment legally has the right to sell, display or show whatever material they choose to provided it's legal under the law. They are NOT required to sell, display or show absolutely everything that is lawful.

It's why Wal-Mart doesn't sell porn and porn shops don't sell Christian literature and country bars don't book punk acts. It's illegal for them to choose why they present, although you might make an argument for self-censorship.