Simon: I think the only fact that makes it remotely acceptable is that it's a minority group.
That is exactly why groups of people marginalized have separate competitions. It is because the white majority (by majority - I mean the majority of power) take up too much space and are based on white-privilege standards. The separate competitions are designed to allow space for those who are discriminated against in the general population.
I personally think it is negative because it just reinforced differences and promotes that idea that skin-color-based discrimination is acceptable.
That idea, "that skin-based discrimination is acceptable", is already prevalent in the population at large. If that idea wasn't already there, these "skin-based" competitions wouldn't be necessary.
*And about the use of the term "Bloody Sunday" - I was somewhat confused - I thought this thread was about events 110 years ago in 1905 - I didn't know that "Bloody Sunday" was being appropriated by the black population. I guess I can learn something new every day.