the guy was a little out of line .the damned cops were way way way out of line.
I once got away with a milder form of criticism of police. While seated in a cafe next to two uniformed officers having coffee and donuts, I observed (loud enough for the cops to hear) that their squad cars were parked outside at the curb at expired meters, whereupon one of them said: "That's the privilege of driving a black and white car." I said nothing after that and avoided being maced and arrested.