The Washington Post has compiled an ongoing database of Police Involved Shootings. It allows users to sort out the information through various filters such as race, gender, type of weapon, unarmed, etc. Please take a look at what they have compiled. In certain cases, it looks like information is incomplete.
https://www.washingtonpost.com/graphics/investigations/police-shootings-database/The
Being a police officer is one of the toughest jobs in the world. Sure there are bad cops. But the vast majority of them, never want to use that service revolver in the line of duty. The occupation is stressful and many officers have taken their lives due to the trauma they saw & experienced including in some cases that of taking a civilian’s life.
Savagewatch 