Am I taking crazy pills, or is this just simply not the approach that countries with globally low crime rates take? At the very least, it's insanely reductive. USA already has the highest incarceration rate per capita in the world. Supporting and hiring more police officers into a broken system won't help anything, especially when the cops are often criminals themselves (let alone the fact that their priorities so frequently seem to be contrary to the community's).
On some level, sure, we need a form of policing that the public trusts, and we need to take crime seriously when appropriate. USA is nowhere near the first point, and is fumbling the bag terribly when trying to apply the second point.
Strong social support nets and programs, fostering community and civic culture, a focus on rehabilitation instead of punishment, working to prevent the conditions that create violent crime in the first place--these are all much more effective steps as opposed to "more cops, more people in jail."
America is a more violent place; it has been for its entire history. Things that work in places with incredible cultural homogeneity don't work here, no matter how many happy images they conjure. What actually works here is policing, and SF is an example of people who believe your post following it off a cliff.
The conditions that prevent violent crime are simple: consequences for violence. Many jurisdictions let people that commit violent crime walk again and again.
From my neck of the woods? The perpetrator of the Waukesha parada massacre had a long history of violent behavior and was out on bail for trying to run someone over with his car a few days prior. Aliyah Perez, the niece of a Milwaukee alderman, was killed in a domestic situation by a man that had previously committed "a brutal domestic attack in which he stomped on, choked, and punched the victim, pulling out clumps of her hair and knocking out a tooth." He was given a minimum sentence only to return to his previous behavior and kill his next victim.
I don't care how our prison population compares to the rest of the world if clearly dangerous and violent people are walking free. The purpose of prison is to separate such people from the rest of society.
Clearly it's better to stop people from becoming violent criminals, then to wait (or push them, e.g. by increasing income inequality, reducing respect for "unskilled" professions, etc.) for them to become violent criminals and then punish them.
If everyone in a country feels valuable and equitable coming up with solutions that benefit everyone is very easy. As it stands in the US there will always be someone that sees themselves losing something and prevents any improvement.
It is far from proven that "broken windows policing" is effective, and in fact there is much evidence to the contrary. See, for instance, the peer-reviewed meta-analyses described here: https://news.northeastern.edu/2019/05/15/northeastern-univer...
There is not conclusive proof that so-called "broken windows policing" works as advertised.
Nevertheless:
Decent people fix broken windows - literal and metaphorical ones - no matter what the stats say.
Because half the country doesn't like the answers that experience produces. Reducing crime isn't hard: support and hire police, put criminals behind bars, and ticket even small/petty crime (broken windows policing). The formula works but because evenly applying the rules produces disparate outcomes among various groups it's evidently racist and it's preferable to just allow violent criminals to run unchecked on the streets.