Tell that to Daniel Shaver. One would think a system that was out to get blacks wouldn't kill whites at a higher rate, which it does.
Taking deadly force incidents-per-capita and adjusting for violent crime rate or
otherwise attempting to account for confounds, it's true that blacks are around or perhaps even
slightly less likely than whites to be the victims of police use of deadly force.
But even given that, it does not logically follow that there isn't bias elsewhere. In fact, the same study I linked shows a tangible difference in use of non-deadly force even though it fails to find bias in actual shootings.
Why the disconnect? I think the obvious answer is that use of deadly force against blacks is more likely to catch media attention, something no cop wants. Take away that consideration, and I don't doubt deadly use of force would follow the other stats.
For the record, I agree that what happened to Daniel Shaver was disgusting. It might be the worst thing I ever watched. It should have blown up, but it ended up as more of a blip. The militarisation of the American police forces is a huge issue.
I think that the largest disparity, and one that for some reason isn't getting nearly enough attention, is in sentencing. To the extent one is white, female, wealthy, connected, and attractive they get off easy. To the extent one is black, male, poor, lacking connections, and ugly they get the book thrown at them.