Edit: I can make no claim of being a statistician. My statistical arguments probably have some holes in them. But I will at least say that the numbers that I've looked at seem to me to be sufficient to question the prevailing media narrative.
The aims of the protests are to shine a spotlight on police brutality and qualified immunity / defund the police / ensure that killer cops are prosecuted / damage property in pursuit of anarchy / score a new TV / whatever. It's all fairly clear and makes enough sense.
Your idea, however, leaves us with nothing but a knowing look and an appeal to not trust the narrative. If you can read any broader frustration here, it's because all the "but what about white folks?" people in my social circle have been following the same playbook.
So where does it go? Does your argument conclude that the police should be harsher still towards black people? Does it suggest that police who kill should suffer less scrutiny than they presently do? Is the status quo fine, and the resolution should be that everyone just shut up and go home?
What's your call to action here, and what would be the immediate real-world consequences of your worldview?