Point being: most people will go through their entire lives doing nothing that would draw the attention of the cops: with or without the police. But that's not all the people, it's just most of the people. The police aren't there because of most people, so saying how most people are, therefore we don't need police at all, is just wrong.
I'd argue this is the least subtle and most apparent reason for cops and governing bodies to exist.
The more subtle reason does actually apply to everyday folks: they have disputes and they're self-interested. Forget serial killers and psychopaths, what about two neighbors arguing about a property line? Garden variety rudeness and anger that explodes into something else, like road rage. Those are the times we want a neutral party in the middle, when in the heat of the moment and long before it goes to the court system.
Cops are not the answer for this, cops are never the answer for anything other than "how do we keep these darkies in line so we can keep getting rich off their labor" and the faster people realize this the faster we can get rid of them.
Yes there are damaged individuals who need help, a cop is not going to help.
Yes there are times where two people feel they have legitimate grievances who need help, a cop is not going to help.
Yes there are times when an actual psychopath has broken into a house and people need help, a cop is as likely to bust into the wrong house and shoot the resident or shoot the people who called as they are to help apparently.
Cops exist to keep a power structure which benefits from and depends on capitalism in place, nothing else. They didn't exist before capitalism took root all over the place, and they don't do anything for you beyond reminding you of your place and the threat of violence if you step out of line.
The only people who want you to believe cops are there to help you are cops and those who want to keep you in a weaker position than they are.
The only people who want you to believe cops are necessary are also cops and those who want to keep you in a weaker position than they are.
Don't help them, it's understandable to be mistaken after literally decades of propaganda and disinformation campaigns, and it can take time to unlearn that shit, but that is what it is: shit.
I mean, for fuck's sake, last week in Austin they had a kid who was shot in the base of the skull with a rubber bullet (less lethal, not non-lethal) and other protestors were asking someone to call an ambulance, some of the cops said to bring the injured kid closer and they could help so they started carrying him over there.
Some of the kids carrying him had actual red crosses sewn onto their clothing, hoping to indicate that they were medics and there to help the wounded.
When they got close, did the cops:
a. call an ambulance
b. begin administering first aid
c. bring the injured kid inside for assistance
d. begin firing bean bag rounds at the kids carrying him
Hint: the letter of the right answer is the only one which isn't part of the acronym it confirms.