That would be a totally legitimate question, if we lived in a colour-blind world. Or in a world where institutional racism has not been well-documented for decades. Or a world where driving while black was not a reason to get pulled over. We don't, though.
Or, the Canadian equivalent:
"Why are natives complaining about the government, when they don't pay any taxes?"
That would be a totally legitimate question, if we lived in a world where native people did not pay taxes. We don't, though.