That's hardly a SoCal phenomenon, sadly. In all the places I've lived, "protect and serve" seems to be abbreviated - "protect and serve our desk jobs and pensions" would be more accurate. If the TSA is security theater, the police are a circus, and the occasional show of force is them coming to town.
It's like those pictures of Luigi Mangione being perp walked in Manhattan with 20 cops and FBI agents behind him. Imagine if those officers were on the beat or enforcing traffic laws instead. That would make more of a difference in our communities than a photo op ever will.