Mayor Bill de Blasio says New York is the ‘safest big city in America’. This may feel true for many New Yorkers, but most of the violent crime happens to a very small group of people – Brooklyn’s black youth. The killing of 8-year-old Daesean (day-shorn) Hill 15 years ago shook East New York to its core. While his death has brought about some change, the dangers persist. Ore Ogunbiyi reports.