Racism is the evil
if the incident is anyhow affected by the color or race of those guys, it's disgraced
but we can't see the results in a parallel world! And we judge this is because of the color and race, with the bias we have in our mind from past memories...
So the truth is not very clear.
I upvoted your post because of the effort you put in it, but honestly I prefered you had a more nuetral explanation.
We have to tolerate more and teach everyone to love more. Hate and racism will make nothing better in our planet.