I wasn't thinking about race; now I am. I believe minority focused groups, such as this, perpetuate racial discrimination. Can't we all just be one big group of humans? Disagree with my viewpoint? Please comment before you downvote. I'm willing to rethink my views.
Another view is that private groups should be able to do whatever they want, and discrimination is only a problem when it's a problem. If "black girls" grew to dominate the industry or significantly change things, then it's become problematic. Obviously that's a rather subjective measurement hence all the "debate".