Although America does have a particular problem in that its police forces are descended from strike breakers and slave hunters, which is not a good recipe for h

Although America does have a particular problem in that its police forces are descended from strike breakers and slave hunters, which is not a good recipe for how to achieve Peelian Policing†, it's far from alone in terms of the results. † Robert Peel was a Tory politician who founded the Metropolitan Police. Peel did a bunch of criminal reform stuff and one of his ideas was what we'd today called "Policing By Consent". As you may have noticed Britain's police don't (on the whole) have guns or armoured vehicles, they aren't paramilitaries or armed gangs, the only way they can be effective is if the community being policed consents to their activities and sees them as legitimate.