I know a lot of "dogs".

Dogs will pull you over while you are driving a car and hold you while he found something wrong about your car, then he tries to write you a ticket, but slowly, suggesting that ticket is for example 100 USD, but you can avoid it by bribing him with 20 USD.

Dogs also will come on your 911 call, for example, for a domestic violence call, but they park their car in front of the building and wait for the violence to calm down. Then they come in and talk with the family, trying to purposely inform the victim (the woman, for example) that it was nothing, and that she kinda deserved it.

Dogs have their own "workers" on the street here, small-time criminals or drug dealers, who work under their protection, dealing drugs, or guns, and paying the dogs a percentage.