I remember a reverse version of this back in the 80's when quite a few rock bands appeared on the horizon with members that were black.
Living Colour, King's X, Fishbone, 24-7 Spyz, etc.
I couldn't believe all of the conversations I heard about people being "shocked" that these guys could really "rock". (for some reason Hendrix and Thin Lizzy never came up in these discussions). Like it's some genetic thing that you have to be white to be a convincing rock band. Of course that is just as much utter crap as saying you can't play funk if you're white. I think these bands had to work even harder to gain respect since it wasn't just the music that was important, but proving the perception wrong. I've seen all of those bands live over the years (hell, I've probably seen King's X 15 times) and I NEVER focus on the color of their skin.