When cops kill, and when cops die

Franklin Zimring quoted in Chicago Tribune, July 8, 2016

American police kill civilians at rates five times higher than police in Canada, 40 times higher than in Germany and 140 times higher than in England and Wales. Is that because we have so much more violent crime, including gun crime? Partly, says Zimring, but “the U.S. rate of killings by police is 10 times as great as the difference in homicides generally.”