Rap mogul Russell Simmons is in apology mode over a parody video depicting abolitionist Harriet Tubman as the central figure in a sex tape extortion plot.  The video was posted on Simmons' All Def Digital YouTube Channel to which he tweeted a link calling it the "funniest thing" he had ever seen.  Many on Twitter were appalled and calls from the NAACP prompted Simmons to take down the video.