It is actually done by the government too. Case in point the Tennessee man who was arrested and jailed for a month. Why? for social media posts critical of Charlie Kirk

It's even worse, IMO. That guy was replying on a thread about Charlie Kirk, but he was critical of Trump, and expressed that criticism with a direct quote from Trump.

That's why the ACLU used to have principles and support extremist groups' right to speech. If they come for them, they'll come for you next. How can you mediate the boundaries of conversation? Every individual must be allowed to peacefully express their opinion. Anyone being attacked for doing so will get support of any classical liberal still around. Call them names if you want, it doesn't work anymore.