I understand your statements. Yes, you are responsible for your actions. But, we do not live in a bubble.

What I mean by ineptitude is not what you picked out.
It is the state of the entire policing system. It could be said that they wouldn't know a crime even if it happened right in front of their eyes. All of the situations I have actually seen with my two eyes have fallen into two camps; the police knew nothing of what was happening or the police were at the bottom of what was happening.
When the laws and codes are so numerous that everyone is guilty, they just haven't been caught yet, and known bad guys are walking on the street (everyone knows who they are... except the cops) then you have a group of inept law enforcers.

But, it is more prevalent to talk about how communities have actually gone about cleaning up crime. All of them have one thing in common, the police had no part of it. (maybe a police man, as a man, but not the police)

Things like cleaning up the entire neighbourhood. Fixing everything and painting everything. Because, it has been found that just a broken window drags down the mood in the neighbourhood, and that drags more things down, and that attracts the criminal element.

Another is real after school programs. Real programs that teach real things to young men. And, I don't mean artsy crafty shit. (the boys who like that, are usually home artsing it up) I mean real skills and real using your muscles. Planting trees, building sheds, taking apart cars...

And another is this guy in Detroit who runs a citizens patrol. They don't arrest anyone. They arrive at a conflict and de-escalate the situation. They keep their area safe and almost free from crime. And they don't do anything like the police do.