DNA test could exonerate man on death row

A brutal murder rattled the small city of Chino Hills in 1983. Four people were found dead: stabbed or slashed dozens of times. Despite evidence that suggested three white men were the killers, only one black man was charged with the murders: Kevin Cooper. He was convicted by a jury and a judge sentenced him to death. He is currently awaiting execution. New York Times columnist Nicholas Kristof calls the case a national embarrassment.