Then, why did the police change their behavior in your opinion?
The SF POA, for instance, threw a ton of money around to defend capital punishment in California while the residents of San Francisco elected a DA (Kamala Harris) who campaigned on a platform of staunch opposition to capital punishment. It was a lot of the same crap with the three strikes law. Non-partisan analysis pointed out that the California statute was excessively punitive and expensive but police and prosecutors across the state came out swinging against proposed reform.
Same thing with the new DA (Boudin). One of his planks was focusing on gangs (a.k.a. organized crime) that are breaking into cars versus and focusing on getting addicts and homeless people into diversion/treatment programs. Of course there was plenty of outrage about how property crime was going to get even worse under Boudin's reign of apathy. Whatddya know, someone posted a video the other day of a break-in at an Embarcadero parking lot. Was it a junkie looking to score? No, it was a group of people in a car, wearing masks going about their task very methodically.
https://digital.modernluxury.com/publication/?i=360208&artic...
The only difference I can see is that making arrests which do not end with charges will show up as the police harassing the citizenry in the statistics so the police, rightfully, avoids making those. The link I posted quotes a police officer saying as much: While misdemeanors, in theory, can bring up to a year in county jail, Fresno Police Sgt. Mark Hudson said it’s not worth it to issue a citation or arrest a suspect who would likely be immediately released because of overcrowding.
I will ask again: what changed from the point of view of police?
Their egos got bruised.
They did not get to crack skulls before
If you mean literally, sure they did. If you mean metaphorically then again sure they did. They're literally throwing a tantrum because things that could've been charged as a misdemeanor or felony (at the discretion of the DA) can now only be charged as a felony for a repeat offense. Note that a lot of the anti-Prop 47 rhetoric misses this. Theft of $950 can still be charged as a felony under a variety of circumstances (including the case of simply being a repeat offender).
While misdemeanors, in theory, can bring up to a year in county jail, Fresno Police Sgt. Mark Hudson said it’s not worth it to issue a citation or arrest a suspect who would likely be immediately released because of overcrowding.
So what? Jails and prisons across the state are overcrowded. The state is exporting prisoners to counties and other states. The overcrowding is a not so subtle hint that simply locking people up is not a solution. Prop 47 doesn't change this dynamic, if anything it would reduce the overcrowding (which is a good thing except for those who would like to see petty theft carry a life sentence).