After three days of this, it's clear NYPD's tactic for "de-escalation" is form a line, charge at peaceful protesters, disperse them to smaller groups, form new lines, charge at them, and repeat until everyone gets tired and/or arrested and either goes home or to jail. https://twitter.com/LiuNewYork/status/1267264294980329473
It is true that some protesters resort to throwing shit, breaking stuff, etc. as the day goes on. Obviously that's bad and they shouldn't do that. But it seems to be a response to the police not permitting them to demonstrate peacefully.