Bottom line for where I live (Orange County): If a cop wants to pull you over for anything, they will.
1. Fast, modified, and old cars are profiled first
2. They usually have nothing better to do (reinforced by 2-4 backup units)
3. Quota time has an alarming amount of cops out - they ticket you for everything - front plate, tinted lights, modifications, exhaust, window tint, bulbs that have gone out, off road lights that aren't covered, windshield cracks, balding tires, tires sticking out too far, etc.... the list.....
I've been pulled over because the officer thought my license plate frame made an E look more like an F. He spent an hour searching my truck and my passengers and found nothing. This is common for countless similar reasons.
But to an officer, you're a criminal. You're breaking the law. You must be punished to the extent of the criminal justice system.