Actually, cops do have quotas. For that reason many are waiting to pounce on suspects, of which we all are until proven innocent. I know many are watching for that wrong turn signal and targeting older make vehicles, which the lower class population tend to drive. The money is made by pulling someone over for a broken taillight and then prying around with a flashlight for something the poor might "self-medicate" with.
Under they eyes of the law we are all “innocent until proven guilty” I believe.
I know of atleast one cop that was waiting to pounce and was a complete jerk about a infraction that didn’t exist but needed to see my license anyway. I could tell he enjoyed the power trip… but that’s not the norm, by any means. Thats just the ones we remember the best, sadly.