All that comes to mind is Robocop, based in Detroit if I remember correctly.
RoboCop: Director's Cut | REMASTERED - ED-209 Malfunction Scene (1080p)
1. SERVE THE PUBLIC TRUST 2. PROTECT THE INNOCENT 3. UPHOLD THE LAW
—- 4. CONFIDENTIAL (blink blink blink)
Elysium also offered some interesting scenarios on automated policing.
Something like that. I think there was a similar interaction at the police station. Automated responses, no grey area, computer says no.