'Stop and frisk': 7 questions about New York's controversial policing tactic
			
		
		
										
		
									
										A federal judge has declared the New York Police Department’s 'stop and frisk' program to be unconstitutional, and new Mayor Bill de Blasio disavows it. Its use has abated under returned Police Commissioner William Bratton, but the fight over it continues. What is it, and does it work?