Efficient, nasty action scenes can't overcome mostly bland characterizations and a half-baked story.
If we are to believe some of his many fans, then Tupac Shakur was never murdered. Rather, he is today living a quiet life, perhaps playing chess under quiet New Zealand clouds with Jim Morrison and Elvis Presley. And while Lauren Lazin bookends her documentary, "Tupac: Resurrection," with his murder, the movie takes us through the turbulent world that formed and informed his biography. The movie convinces us that we have entered not only his mind, but his heart.