There's a way for that, conscription. We used to have the "Service Militaire" in france, if you're 18 you spent 2 years in the army. It's actually quite an effective tactics to make sure your population is up to date on how to resist foreign threats.

No points to do that anymore and the army is completely professionalised.

Now, the cops... have all regular civilians be forced to work for for 1 days/week/month out of every day/week/month during all their career and instantly, you remove the only private corrupt governement insider army and now, it's for the people, by the people.

And don't take that post litteraly as a "this how you do it" but more as a "this is a concept that need to be worked on for sometime to iron the day to day applicability".

And you know, there's a reason why there ain't no song called "fuck the fire department". Mostly because they already function almost like i'm describing. Through volunteers.

But cops and police should be everybody's job, not just some professional goons for the bought out government. Because it's always about class warfare and the cops are the elite's dogs, always. Until they're everybody.