The New York Police Department has adopted a controversial strategy to overturn the city's reputation as the murder capital of the world, with elite squads patrolling the streets under the motto "We Own the Night". But in one of a series of recent cases, a young, unarmed black man was killed outside his own front door by four members of a crack unit.
Kurt Barling's investigation assesses events in the city. See today's choices. Producer Sandy Smith : Editor Fiona Murch