One being white or black has nothing to do with it. You know the expression: When all you have is a hammer, everything looks like a nail? I think it applies here.
An obsession with race as an identity and a need to see and feel persecution as essential to that identity leads to the conflating of a natural and normal human dispute:
Neighbor: “You were loud at 2am, that’s inconsiderate.”
Your buddy: “No I wasn’t.”
With the veil of ignorance, you can imagine yourself as either of these people, and their race has nothing to do with it. When you live in close quarters with others, noise and not being heard at 2am is a very real concern.