This week marks the 10-year memorial of Trayvon Martin's death. Here & Now's Tonya Mosley spoke with his mother, Sybrina Fulton, and two other mothers who lost sons to gun violence, about grief and perseverance in the face of tragedy.
Billy Ray Shirley, 17, was killed in an act of gang violence in 2011. He dreamed of starting his own community center and his mother has made that dream come true.