You'll see the classic three step police escalation used - ask, order, force
They'll ask everyone to go home with promises to meet some of their less-outlandish demands, or at least start a committee they can be part of, which will get a few to leave who are already on-the-fence and bored or just plain out of food/drugs.
Then they'll order the CHOP shut down and all citizens out by midnight on suchandsuch a date, by order of Mayor Karen herself, which will get a few more to leave as the loss of/betrayal by their biggest local cheerleader will be demoralizing.
Then, as they line up in riot gear to start the "Force" part and actually sweep the block, the vast majority of those left will realize "holy shit this is gonna happen, I don't want no part of this" and leave, so that the only ones left are the foolish diehards that'll be met with tear gas, beanbag rounds, and while a token one or two will chuck rocks, all the rest will disperse at that point and go home to cry on Facebook about how the utopia was here at last, but the cops just ruined it, wah wah wahhhhhh
There's not gonna be a siege or a coordinated military strike to end this, the opposition doesn't rise to the threat level such is warranted, this coudl've been ended long ago with basic crowd control tactics had the police been allowed to do their jobs.