OK, I'm white, so maybe my perscpective is off, but here is some of what I see:
In an ideal world, yeah, race would play no part in these things. I think most of us want to live in that world. but we don't.
We live in the world where the media harps on the swimming prowress of a white rapist but are quick to mention the number of times an unarmed black man shot by police has been pulled over in recent years.
We live in a world where those with darker skin are much more likely to be found guilty, goiven longer jail sentences and even be suspended from school than those with white skin---for the exact same things. (tons of studies to back this up---google)
and on and on and on
And, yes, when it comes to unarmed or legally armed people being killed by police in very similar circumstnace, it does seem that the narrative is different when the victim is a person of color than when they are white. People are much quicker to defend and officer for shooting when the victim is of color. They are much quicker to suggest that the victim had their hands in the wrong place or spoke with the wrong tone or whathaveyou.
If we could always just look at the facts of the incident, hey that would be awesome. But we can't. And we haven't been. And we may never get there, but if we don't admit we have these biases (and they are often subconscious) and actively work to overcome them, then it is pretty well garunteed we'll never get there.