You make a good point. I believe the idea with a rating system of police is that you tie the departments funding to the average rating of your officers. So whil

You make a good point. I believe the idea with a rating system of police is that you tie the departments funding to the average rating of your officers. So while officers can abuse their power, if there is a reliable signal of this (reflected by their rating), they get canned to raise the overall rating of the department.