Re: What bothers me most is this one
The UK doesn't have police departments, they are independent authorities in their own stead. That could actually be a source of the failings of the US states' police system, the police are a department of local government and subject to all the failings of any corrupt local government. We are in danger of following them with the ridiculous Crime And Police Commissioners where the head of the local police force is now somebody dependant on a popularity contest to keep their job.