I would like to add that although this incident was terrible, and despite its occurring on the heels of the recent Dallas shooting, I would not say that it is representative or typical. We have a large nation with a vast multitude of l.e. officers. Factor in the number of police calls with the number of wrong shootings. Even one is too many, but the percent of wrong shootings as part of total calls is a minute decimal fraction. Is there a problem? In public service endeavors there is never enough training. Inservice and preservice training should be reflective in that the programs take into account data gathered over time. Some might ask why minorities are over representative in these shootings. I can only guess. I will share my experience but will not generalize from my small sphere of life to any other. Note that I guess but not declare. I do not imply so do not infer.
In my region minorities are over represented among offender groups. The observation applies to jail population and probation and parole client populations. Neighborhoods are highly segregated. They show extremely high incidence of crime descriptors. These statements are verifiable. The same neighborhoods have highest frequency of 911 calls. Officers responding to these calls will most likely encounter citizens who who are over represented in the groups cited above.
A significant chunk of my career was spent working with inner city residents. Was it easy. Not always? Was I afraid of the people with whom I worked? No. Was I comfortable? Yes. Once I was asked to explain my success. The answer was "I know what I'm doing."
Some programs are directed by persons who do not know what they are doing. It follows that too many whom they train may not know what they are doing.