People are right to want less police intrusion in their lives. The way to get there is more precision, not less.
A car is a difficult thing to steal. It is large, cherished by its owner, difficult to hide and required by law to have identifying metal plates that everyone can see. A good thief changes the plates, and an excellent thief steals a common car in a boring color and hopes to blend in among the crowd. But eventually, no matter what techniques they use, they must drive that car on the road, and roads are public places.
— Read on worksinprogress.co/issue/a-cops-case-for-flock/