Two police officers, patrolling stairwells in the New York City Housing Authority (NYCHA)s Louis H.
Pink Houses in East New York, Brooklyn, entered a pitch-dark, unlit stairwell.Officer Peter Liang, 27, had his firearm drawn.
It was one of a series of explosive confrontations between police and unarmed suspects, including the August shooting death of black teenager Michael Brown in Ferguson, Missouri, by a white officer.
