​Decimation for even minor infractions for cops who break the law.

It is often said that police tend to get away scot free due to qualified immunity and not to mention that cops tend to have a culture of they who take care of themselves, meaning that any investigation tends to be hushed up thanks to the formation of old boy networks.

Well, they lose it and their punishment is even harsher in my idea. For even the tiniest infraction, they will be decimated (1 in 10 of all personnel in the precinct to be killed for the slightest screw up) with the cops to be condemned drawing lots and whoever draws the short stick will be shot by their cops and the public outside a public area (and their remains displayed outside their precinct as a warning) , scaring cops in being nice to the community together with them knowing that one of them will be next if they screw up again and allowing the public to know that to join the police means that the punishments will be exceptionally harsher on them for even the tiniest abuse of power and that the cops will take care of their own. No one is immune, not even the chief as well.

Well, what if we have a dearth of people willing to join ? Press gang. Who needs minimum age and qualifications to be a police officer? Just grab some living bodies, throw them in the nearest gang hotspots after arming them and wait for a few days, then come back and get the survivors for advanced training and initiation into the police force. Oh, and this means that rank would be positional rather than awarded for merit to prevent old boy networks that tend to lead to corruption.