Is there such thing as black news? ? ?
A news channel about events in and/or affecting the African American community? Sure. There are plenty of specialized news channels these days -- for conservative audiences, for English-speaking viewers interested in world news from a French perspective, for sports fans, etc., so this is hardly exceptional.
It's easy to dismiss something as an "awful idea" is you're not a part of the intended audience. Let's give it a chance and let the market decide.