I am afraid that the rest of your post seems to contradict this statement.
However, let us look at the overall situation.
Nearly all the media outlets on your list were created for the purpose of providing people who had been excluded from other mainstream media an opportunity to get their ideas (and ads) out to the public. Your typical media boss is looking to make money. A great many ideas are nice ideas, but will not attract an audience. How many white women will spend the time watching a show on dress or make-up that addresses issues black women have with the fashion industry or beauty products? A national show addressing everyone would consider a niche show to be a good way to lose money. Why would a national network spend the money to finance a niche show that would be clobbered in the ratings? On the other hand, a specialty network or magazine, with a smaller audience, could broadcast or publish articles for lower cost and reap the returns of a dedicated audience.
Similarly, if a person or company has a product that manages black hair styles or beards, why would you want to spend all the high dollars to advertise on a national outlet where much of the audience would be totally uninterested when, for lass money, you could buy advertising on a smaller outfit with a target demographic that is more in tune with your product? ,
By the way: B.E.T. has been owned by Viacom for several years, making less money per episode, but spending far less per episode, so that their profit is sustainable. (When B.E.T. first began broadcasting, it was the best place on cable to find old Westerns, Comedies, and Police dramas. They picked up and broadcast the shows cheaply, then made a profit.)
If B.E.T. or the magazines on your list made a practice of discriminating against non-black people in their hiring, you might have a point, but if you are accusing Viacom of pro-black racism, you are not going to persuade many people to join your campaign.
To recap: if I have a product to address skin conditions that primarily affect black people or cultural situations that are going to primarily affect black people, where should I advertise or publish? At a limited number of minutes a day ot pages a month, it would be hard to get into a national outlet. (And the cost might be prohibitive.) However, going to a media outlet or publication that narrowcasts my message could be cheaper and easier to find.
There are a number of Latino/Hispanic outlets in the U.S., today. There are still Jewish oriented outlets. There are German-American, French-American, Irish-American, etc. magazines. (They tend to be too small to move into television.)
And in what sort of segregation are they engaged? They have white workers. They broadcast shows with white actors. They are owned by Viacom (which also owns Hispanic outlets.)
It is hard to believe that you refuse to watch Bonanza simply because it is carried by B.E.T.
