The ad for the Roach Motel (circa 1985) comes to mind: They check in but they don't check out.
The cat is unlikely to starve during two or three hours in the lockup. For the most part, these drama queens stand greater risk of being smashed by a falling piano than imprisonment.
It seemed rather obvious to me that the best solution for your average municipal justice system is to arrest only the ones you can make an ironclad case against, then prosecute them to the fullest extent of the law, with no options for fines, probation, community service or suspended sentences, only hard time, be it only a few weeks or months.
If only a handful of these adorable scamps have to do a year in the pen, said city would see a rapid decline in organized disorder from the black bandana crowd.
Yeah, that!
Don't jail them. Fine them. Many of these people are well to do, and a potential source of local revenue. Fleece them. Eighty bucks, plus cost of court should dampen things.
Write up the ones with ID's. Then load them on a bus and ship them out to Maryland, to a distant commuter train station. They should be able to sing "Kumbaya" several times through on the way out. They'll have to buy a ticket back to wherever they parked their car.
Professional protester organizations have their own assault teams (black bloc) to confront the police, field medics to treat the wounded and lawyers to get them out of jail.
This is the principal of creating a problem, then fixing it and gaining plaudits, respect and the ensuing power.
The theme of a book called "The Unseen Hand" by A. Ralph Epperson.
According to this conspiracy theory, this has been played out throughout history with wars, famines and depressions. The fixer gets the prize, so why not create a depression?
It's based on the premise that things don't just happen in this world; they are intentionally caused.