It’s tragic, but many orders of magnitude away from your claim.
It’s not the quantity that makes it horrible, tragic, and infuriating. It is all those things because it’s evidence of a larger systemic issue which includes lots of other awful things that fall short of homocide; and it’s largely unnecessary.
[0] https://www.cdc.gov/healthequity/lcod/men/2017/nonhispanic-b...
[1] https://www.statista.com/statistics/585152/people-shot-to-de...
You're right the quantity isn't specifically important but it does illustrate that there is a problem. Even if it is not the #1 cause of death it is disproportionately higher.
For what it’s worth, black men kill more cops than cops kill unarmed black men.
Regarding your second claim, I can't find those numbers. The closest thing I can find is this newsweek piece [2] with data from 2013 and 2014. That suggests most people who kill police are white. But it also includes prison guards as police.
[1]: https://www.latimes.com/science/story/2019-08-15/police-shoo...
[2]: https://www.newsweek.com/who-kills-police-officers-315701
What is your proposed solution?