What happens when a young man is accused and convicted of a brutal rape and murder that he didn’t commit just because he is black? It happened to Darryl Hunt in Winston-Salem, North Carolina in 1984. Hunt spent 10 years in prison before DNA testing exonerated him of the rape. He spent another 10 years in jail before finally winning his release in 2004. We’ll spend this hour with Hunt and his attorney S. Mark Rabil, both of whom are featured in a new HBO documentary “The Trials of Darryl Hunt.”