“I’m going to use Congressional authority and every influence with big tech platforms to mandate immediate ban for life of every post or commenter that belittled the assassination of Charlie Kirk. I’m also going after their business licenses and permitting, their businesses will be blacklisted aggressively, they should be kicked from every school, and their drivers licenses should be revoked. I’m basically going to cancel with extreme prejudice these evil, sick animals who celebrated Charlie Kirk’s assassination.”
First Amendment guards against state repercussions for speech, with exceptions. Careful not to conflate the legal and colloquial usages.
That’s abridgement of the First Amendment.
Which is why everyone needs to get off of twitter. Especially government accounts.