Yes i totallt relate to this, since i am doing it for 2 years straight. If you ever enter a very dangerous neighberhood you will notice the intimidation going on over drive, they automatically assume i am from the Police.
Had a situation with 2 policeman once and they also felt intimidated but with a sense of authority, i never get to stop in Police stops, i always get the Nod and go forward.
Also you will notice that people that might have bad intentions with you will get terrified…something in the script or aura kicks in and they get the big eyes of fear out.