It looked only at shootings, not killings by other means, such as stun guns and deaths in police custody.
About half the victims were white, half minority. But the demographics shifted sharply among the unarmed victims, two-thirds of whom were black or Hispanic.
Overall, blacks were killed at three times the rate of whites or other minorities when adjusting by the Census-recorded population where the shootings occurred.
Most victims - more than 80 per cent - were armed with potentially lethal objects, primarily guns, but also knives, machetes, revving vehicles and, in one case, a nail gun.
Forty-nine people had no weapon, while the guns wielded by 13 others turned out to be toys.
The dead ranged in age from 16 to 83. Eight were younger than 18.
About half of the time, police were responding to people seeking help with domestic disturbances and other complex social situations.
Nearly a quarter of victims, 92, were identified as mentally ill.
- additional reporting Bloomberg
