Is this a violation of the 1st Amendment or a way to skirt around it?
The question to ask is whether any of these accounts would have been allowed if reported by people. There’s no evidence that the FBI was making threats that something otherwise allowed had to be removed.
The cop was telling the bouncer, "Throw that guy out."
And the bar owner did what the cop said, because the police department had threatened to shut down bar owners in the city for the last three years.
If that is true, that would make it government coercion. But no one has properly alleged anything with regards to Twitter on that analogue.