Honestly? Considering how little the police actually do to help anyone, versus the huge amount of harm they cause, I’m not entirely convinced that “Get rid of all police” wouldn’t be a good idea, even if they got replaced with basically nothing. And I’ve seen a lot of leftists who felt similarly. So “those on the other side” aren’t entirely wrong; they just don’t understand how incredibly bad police are.
This doesn’t mean we should replace the police with literally nothing — obviously things investing in social services and crisis intervention would be great. It’s just that I find it hard to do worse than what currently exists.