AFRICANGLOBE - Death has this way of making truth-tellers seem harmless. Alive, Martin Luther King provoked a president and divided a nation with his truth. Dead, he is an image on a commemorative place mat, his words safe enough for recitation by children. This also holds, albeit to a lesser degree, for Malcolm X and Medgar Evers. Dead, they were no longer dangerous. “We took out all the radicality of their legacy,” says Raoul Peck, director of “I Am Not Your Negro.”