Firedance

From the front flap of the Tor first edition: "Aubry Knight was raised to be a street fighter and killer for the Ortega organized crime syndicate, doomed to a violent life and an early death. But he fled to the underground world of the Scavengers, in what was left of Central Los Angeles after the Great Quake and the epidemics. And there he life was changed when he met Kevin Warwick and Promise Cotounou. He became Warwick's right-hand man and a champion for the underclass, and he married Promise. But Knight made many enemies, including the great Dictator of Unified Africa, Phillipe Swarna, as he and Promise built their Scavengers into an international force to be reckoned with. Now Knight is faced with the strangest challenge that this futuristic world can present. Someone has created accelerated clones of Knight himself, and trained them as assassins. Their opening shot is the death of Warwick's sister. Their next attack is on Aubry and Promise's strange child, Leslie. Aubry Knight is drawn inexorably toward Africa, toward the mysteries of his own past, and toward a future that may take him far from Los Angeles and the only life he's ever known. To win this battle, and save his family, Aubry Knight must defeat himself."