Who determines what speech gets shut down in the public square? In the US, it's a mixture of courts and legislation setting laws and their interpretations, lawsuits establishing damages for certain types of speech, and then of course cops on the ground making individual decisions on a case by case basis and using violence or threat of violence to arrest people.

I am not sure how any of this is apologizing for corporations instead of any other aspect of our system though...

Edit: For the lawsuit aspect of shutting down speech, check out this very topical lawsuit: https://www.washingtonpost.com/politics/2021/01/11/cybersecu...

Even if this particular suit fails, I hope that it demonstrates that there are entire bodies of law set up to silence some forms of speech.