Glenn Beck said this quote

America comes with both rights and responsibilities. You have, for example, the right to free speech, but you have the responsibility to not yell 'fire' in a crowded theater. If you don't live up to that responsibility, you face certain consequences. It's a simple but effective formula. Unfortunately, tenured professors are completely insulated from it. They can scream fire in their classrooms all they want - and then hide behind their tenure if anyone questions them on it.