The entire history of policing is despicable and detestable. The very inception from slave caching "patrols" is enough to make a reasonable individual be very dubious of what it is they do. On the surface, policing for crime is no different than patrolling for fires or ambulancing for accidents, police should only respond to crimes, as they did when they were called detectives and investigators.
Stay in their office until or unless specifically invited to come somewhere for a specific purpose.
One thing I hate is that if you call for a firetruck or ambulance, the cops also show up. That's bound to cost lives.