You have the right not to be prosecuted for your speech, that does not mean you have the rights to a venue, an audience or are free from the personal fallout of its impact.

I've found myself disinvited to a few threads on this very forum when my very slightly more conservative views apparently conflicted with the OP. How could I tell? Because I had a notification of a reply, which I couldn't read because "the thread was made private".

In my book, opening up a topic means you've opened yourself up for replies, whether you like those replies or not. Not everyone is going to agree with you. If you just want to hear your own opinions back, try an echo chamber

I think people are confusing the right to speak with somehow having the right to an audience.

I am a strong advocate for a battle of ideas. A demagogue should be allowed to speak on a college campus only when he or she faces an opposing speaker who can and will truly debate him or her.