Oklahoma and the District of Columbia were the states with the highest rates of police killings in the country, with 1.2 and 0.7 deaths per 100,000 people.

“We believe that this knowledge is vital to informing policy change to prevent police violence and improve reporting, and hope that the revised estimates of police violence presented our study will be used as a jumping-off point for further investigation and policy change in these areas,” the authors said.

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