A person does not have to be black to attend a historically black college or university. Same with black churches, and the Negro Baseball League too for that matter. Hence I don't know how any of these add to the subject.
"It took until 1983 for a black women to become Miss America since then a total of 8 black women have won the crown."
How many years will it take before a white women can win the Ms. Black US pageant?
"There are a couple of Asian American Beauty Pageants."
I can understand that, and I could understand a Ms. African American pageant too. Neither of those is (or would be) based on the color of a person's skin.
"In Congress we also have the Congressional Black Caucus as well as a foundation called the Congressional White Caucus."
I find the idea of a Congressional [name a Color] Caucus very offensive, not to mention counterproductive. In response to request by a non-black member of congress to be a member of the Congressional Black Caucus a CBC member reportedly said, "Primarily, we are concerned with the needs and concerns of the black population, and we will not allow white America to infringe on those objectives."
That's not the dream, either. An important part of the dream is, "The marvelous new militancy which has engulfed the Negro community must not lead us to a distrust of all white people, for many of our white brothers, as evidenced by their presence here today, have come to realize that their destiny is tied up with our destiny. And they have come to realize that their freedom is inextricably bound to our freedom. We cannot walk alone."