Except you’ve been tricked if you think the ruler of police is to protect you. Despite the little sticker on their car, the Supreme Court has repeatedly decided that the police HAVE NO LEGAL RESPONSIBILITY to protect you out anyone. That’s just not their role nor responsibility. To think otherwise is to linger in a fantasy world.
I expect that the frequency of violent crime is predictive of police behavior towards crime.
When it's rare, then it's easy and reasonable to take a highly idealistic approach. When it's frequent you have to deal with uncomfortable practical issues like whether an officer should prioritize your survival, or their own. There's a line where heroics turn into suicidality, and that's largely driven by frequency.