Mayor Michael Bloomberg and Police Commissioner Raymond Kelly argue the main purpose of stop-and-frisk is to get guns off the street. Out of more than 685,000 stops in 2011, about 770 guns were recovered. That means about one tenth of one percent of all stops result in the seizure of a gun. But those guns are not showing up in the places where the police are devoting the most stop-and-frisk resources. Explore this map to see for yourself.