That's too unsafe. The number one priority is safety. Police work should be done by remote robots, with orbiting drones equiped with hellfire missles. At the slightest sign that someone is upset, the entire area, to a limit of a full square mile, needs to be obliterated with missiles while the police operator in a bunker is given stress relief therapy, a year off with pay, and a promotion.
It's the only way to be sure. Anything less is the opinion of people who want cops to die.
Too large a percentage would accept that as a viable method of containment.