In Ferguson the cops fired tear gas, the canisters exploding like wayward fireworks, indiscriminate and briefly magical before the smoke began to rise.
The pictures from Missouri could be misleading in another way, too, for the guys behind the guns didn't look like police. In armoured vehicles with assault rifles and tactical kit for Timbuktu, Missouri looked like a military state.
No doubt the police had to do something. After protests in Ferguson led to looting, at least a dozen businesses were smashed and one store was burned to the ground.
Even the president's plea for quiet and calm fell to chanting crowds and rubber bullets: violence sparked violence, sparked violence.
But tear-gassing news crews and arresting civic leaders does little to win public support.