Good news. The Supreme Court has ruled that public schools can't punish students for speech outside school (with some exceptions, e.g., threats). https://reason.com/2021/06/23/high-school-cheerleaders-profane-social-media-rant-is-protected-free-speech-says-scotus/
Liberdon is a Mastodon instance for libertarians, ancaps, anarchists, voluntaryists, agorists, etc to sound off without fear of reprisal from jack or zuck. It was created in the wake of the Great Twitter Cullings of 2018, when a number of prominent libertarian accounts were suspended or banned.