From my understanding, the issue with the police in the US is that they have to do to much, work as EMT, social services, mental health services, community police (proximity police? basically neighborhood cop), peacekeepers (during protests or organized events), investigating, policing traffic...

So you actually have a big "company" responsible for something you could dispatch to at least 4 other services (i've heard call to divided it in 7 parts, but i can't find where i read that, so let's be reasonable and say 4), and they have too much political power because of it. Divide the budget accordingly, correctly train teh police and "new police", call it "police" too because branding works and to stop people from crying out in fear ("mental health police" might not be the best brand, but other might work), and actually separate departements, and concerns. Separate training material, separate training place, split the union. Also make a department that will take care of orphaned police kids.

"Divide the police" is a way better catchphrase anyway.