You are a rookie on traffic patrol. you watch as a young black man drives past you in a new silver porsche. you estimate the car’s value at around $50,000, yet the neigh- borhood you are patrolling in is characterized by low-income housing, cheap apart- ments, and tiny houses on the lowest end of the housing spectrum. you follow him and observe that he forgets to signal when he changes lanes. ordinarily you wouldn’t waste your time on something so minor.