You say, "[The question] hinges on the assumption that the function of the police is to protect all people, investigate crimes and help build a case to bring perpetrators to justice."

This is not an assumption I share. There's a chant that is often recited at protests: "We protect people, you protect property." If you are white and a property owner, it's reasonable to expect that the police are there to protect your interests, because generally speaking, they are. But if you are Black, poor, or both, this is not an illusion you've ever been invited to participate in.

I do not expect that anyone at the CHOP will call the police because by and large, these are not the kind of people who call police. I think there's a pretty significant race and class divide between people who think the police might help them and people who know they won't.