DNA Evidence Exonerates a Man of Murder After 20 Years in Prison

The headlines are disturbingly familiar: A person, usually male and often black, who has spent a substantial stretch of his life behind bars is freed after DNA evidence shows that he is innocent.
That was the case for Horace Roberts, 60, who was released from a California prison on Oct. 3 after DNA evidence exonerated him in the 1998 killing of his former girlfriend and co-worker.