The First Amendment only protects freedom of speech from government interference. On your private property you are free to limit speech as you see fit, unless s

The First Amendment only protects freedom of speech from government interference. On your private property you are free to limit speech as you see fit, unless state or local laws have broadened free speech rights to work against private actors. So unless the latter exception applies, your thought experiment is broken early in the chain. You are free to apply your own free speech limitations as long as you are within the bound of other laws, e.g. you're not discriminating in some other way that is illegal. See http://en.wikipedia.org/wiki/Pruneyard_Shopping_Center_v._Robins http://en.wikipedia.org/wiki/Pruneyard_Shopping_Center_v._Ro...