The point is, in the context of law, you can't just advocate for an agreement over a gentleman's handshake: you have to be in a position to enforce it. And enfo

The point is, in the context of law, you can't just advocate for an agreement over a gentleman's handshake: you have to be in a position to enforce it. And enforcing restrictions on speech of this sort affects far more than just college professors with unpopular opinions. The 1st Amendment also covers anonymous speech.