Poet, movie star, revolutionary - Tupac Amaru Shakur was the most popular rapper in the world.No one symbolized the violence at the heart of gangsta rap more than Tupac, and he ultimately fell victim to that violence, gunned down in a drive-by shooting in Las Vegas at age 25.Who did it and why? This raw no-holds-barred account discloses new information, including exclusive photo evidence, about the unsolved murder of Tupac: the failed investigation, the rap wars, the killing of Biggie Smalls, the Bloods-Crips connection, and the many possible motives leading to the murder that rocked the music world.