But let us also not forget the those people have already lost. And are dying out generation by generation. It does us no good to pretend that somebody who uses the n-word to get the upper hand in an argument is an existential threat to black people.
I don't think there's a black person living in the West who hasn't experienced some degree of racism, but I'm extremely leery of that word "trauma" to describe it in the overwhelming majority of cases. I recognise that you're a professional here and I'm not, but the idea that somebody genuinely can't cope with a particular sound because somebody was racist to them at some point sounds like learned weakness to me.
I don't mean to minimise anybody's experience, I know of many awful experiences, but projecting that experience onto a sound, and then justifying reacting to that sound regardless of context, sounds like an incredibly unhealthy way to approach recovery to me. Or, indeed, a surefire way to never actually recover.