Because "real" blacks watch MSNBC and CNN, while fake blacks watch Fox News wit dem creepy a#s crackers.
Note that there has been a lot of outcry from those who support the prosecution for the lack of blacks (i.e., zero blacks) on the jury.
A Fox News Watcher’: Ejection Of Black Zimmerman Juror Over Ideology Embarrasses Race-Obsessed Pundits
Even if you resent it, you have to appreciate when reality cuts against the pundit-promoted narrative of the moment. In the wake of the verdict which found George Zimmerman not culpable for the killing of Tryavon Martin, many commentators lashed out at the justice system itself. With a nearly all-white jury, some political commentators asked how anyone could have anticipated an outcome other than full acquittal. On CNN today, it was revealed that it was the prosecution that ensured the jury would be composed primarily of white women. Why? One of the only black potential jurors being considered was nixed by the prosecution because he watched Fox News.