I'm of mixed race. I just got pulled over last week. I drive a modestly nice late model car in a modestly nice neighborhood. I politely asked the cop why I was

I'm of mixed race. I just got pulled over last week. I drive a modestly nice late model car in a modestly nice neighborhood. I politely asked the cop why I was stopped and he said "one of your license plate lamps is out" He took my driver license and registration and after 10 minutes or so handed them back and said "Be a little more careful..." and sent us on our way. Got home and my license plate lamps are both working. My wife and I had just left a movie theater around 9:00pm, and to the best of our recollection violated no traffic laws. We were actually stopped two blocks from the theater. I've definitely felt like I've been targeted before. However, in this instance it felt more like a fishing expedition. I wonder how much of any citation resulting in a fine ends up back in the local PD's coffers?