I tend to agree that its a cultural issue and the values that culture champions, not an explicitly racial issue. There's no law of nature keeping black females from coding, but the values traditionally promoted by the culture black females tend to identify with doesn't include coding, which Kimberly Bryant is trying to change. If they actively kept non-black females who identify with this culture from joining, I would feel a bit more concerned that it's heading down the wrong path. According to the Eventbrite link, no such requisites are stated, only that the program is intended for females aged 7-17.