Cops Killing, and Being Killed, in a Vicious Circle

The U.S. is suffering because of a culture of guns and violence. But that culture could change.

Death in Dallas.

Photographer: LAURA BUCKMAN/AFP/Getty Images

The shooting of 12 police officers in Dallas on Thursday suggests spiraling violence: The cops were shot during a protest against the shooting of black men by police. A vicious circle of retribution would be something new for the U.S. where, unlike in other developed countries, killings by police far outnumber officer deaths in the line of duty.

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