Actress Tyne Daly and playwright Terence McNally discuss the new play Mothers and Sons, McNally's 20th work on Broadway. It is the story of the mother of a young man who died from AIDS, 20 years earlier, and his partner when he died. In the intervening years, both their lives have changed - more than they could have possibly conceived. The play asks us how far have we come as a society in need of healing and how far do we still have to go.