In some cities that is certainly true. The larger the police force the more likely there will be these deviants among the men in blue and the more likely the Department will cover it up. they don’t like to fire people for these little things. It makes new employees harder to find.
This also raises the question of what type of psychological screening these people are given at time of application.
I would offer psychological screenings be held randomly along with lie detector tests as fitness for ability to continue the job. It’s only my opinion but it is a shame to even think that. NSA employees are subject to same all the time even low level employees but with differences in both screening.