I didnt try in the first place. I asked you for proof and I am awaiting your reply.
You made the initial claim, the burden of proof is on you, that's how debate works. You did take debate in school, right? I don't mean the discourse that passes for debate on an elementary school playground but offered in schools of higher education.
Oh and, "it's happening now" isn't proof of your claim, it's proof of how free speech can be perverted and restricted, the kind of proof that permeates our nation's history.