I only have 2 personal anecdotes about police & crime.
In one, I saw some scruffy people loading audiovisual equipmemt into the back of their scruffy station wagon. The suspicious thing was they were doing it at 8pm from the back door of a college classroom with no lights on anywhere. I happened to be standing in the adjacent parking lot yakking with friends & recognized the (humongous 1970s era) gear.
The bad guys drove by us with ther headlights off & just after passing us they turned them on, helpfully illuminating their license plate without having trashed our night vision.
5 minutes later a cop showed up, we gave him the vehicle description & plate #, which he radioed in. He got back an address I recognized as within a couple miles of the school & off he went.
The next morning the local paper had a story. The cop went directly from the college to the to the house, called for some help, and then they found the car & goods in the garage and the people in the house. Total time from crime to arrest, about 20 minutes.
This was in an upper-midldle class suburb of LA. Not the inner city, but not a small town eiher.
In the other story (late 1980s), my garage was broken into & some power tools stolen. I got up in the AM to find my garage door up & the goods gone. No damage & I wondered how they got the garage door up with the electric opener still engaged & no outside switch installed.
Called the cops, somebody came by a couple hours later to take a report. I described what I knew. He said the typical MO was to look for unlocked cars & then look for garage door remotes. D’oh!! I usually left my car unlocked at night & yep, it had a remote in it, although out of plain sight.
As I started to descibe the missing property, he started telling me what else I was missing! Seems that at about 3am a cop buddy of his had seen some folks cruising our area very slowly with headlights off. That aroused his curiosity & after a brief chase he had 4 bad guys & a trunk full of power tools & golf clubs & whatnot. He & my cop were trading stories at shift change when this one came up.
So the bad guys were in jail & my stuff was in the evidence cage before I even woke up to find the crime scene!
This was in Las Vegas, not some 3-cop small town. At 3am on a random Wednesday, there is plenty going on in LV to keep a police force busy. Including catching my perps.
The only problem was they couldn’t release my goods until after the trial, which ended up being 6 months later. Between the crime & the trial I ended up replacing all the tools because I needed them for one project or another. After the trial I had 2 Skilsaws, 2 1/2" drive drill motors, etc., etc. Oh well.
So for me at least, the cops have done a pretty good job over 40+ years. Other than being on the receiving end of occasional (deserved) traffic citations, I’ve had no other first or second person interactions with them. So far the score is good guys 100%, bad guys 0%.