Kemp Powers is the co-director of “Soul” and screenwriter of “One Night in Miami,” but his collaborators may not know just how much of himself is in those films.Kemp Powers is the co-director of “Soul” and screenwriter of “One Night in Miami,” but his collaborators may not know just how much of himself is in those films.Read MoreContent Type: Personal Profile, Movies, Writing and Writers, Kemp Powers, Soul (Movie), One Night in Miami (Movie)