You must be a bit innocent to think that a DA's priorities and stated goals of moving away from incarceration will not flow down to an understanding among police that they are being told to "look the other way" and that their efforts to arrest lawbreakers (their primary tool) are being made hollow and pointless by lack of follow through on the prosecution end.

"...Boudin said he will end cash bail and “tough-on-crime” sentencing enhancements, launch a unit to consider the immigration consequences of prosecutions and stop filing cases stemming from “illegal searches” after a minor traffic violation." -- https://www.sfexaminer.com/news/citys-new-progressive-da-che...

Immigration consequences of prosecutions -- just what do you think this means? People not getting prosecuted.