You do not move, you do not pout, you do not cover your face, you do not duck down into the car, you do not roll up your window. You LET THEM SCAN YOUR FACE. If you are feeling particularly privileged, you may gently, at-most-once, convey (ORALLY ONLY) that you do not wish to be scanned/photographed.
Then you fight it like hell with the police department's grievance process, with your local courts, and with your local city/municipal council, who should have budget oversight to the police force.
Headlines like this get people killed. Seriously.