There was an article about the African-American man sitting behind Trump.  Apparently he makes an appearance at many of his rallies:  

"The radical fringe activist from Miami once belonged to a violent black supremacist religious cult and he runs a handful of amateur, unintelligible conspiracy websites. He has called Barack Obama “The Beast” and Hillary Clinton a Ku Klux Klan member. Oprah, he says, is the devil.
Most curiously, in the 1990s, he was charged, then acquitted, with conspiracy to commit two murders."

http://www.msn.com/en-us/news/politics/the-strange-story-of-that-%E2%80%98blacks-for-trump%E2%80%99-guy-standing-behind-potus-at-his-phoenix-rally/ar-AAqzQon?li=AA5a8k&ocid=spartanntp