On a mild February afternoon, Fiorino, 25, decided to walk to an AutoZone on Frankford Avenue in Northeast Philly with the .40-caliber Glock he legally owns holstered in plain view on his left hip. His stroll ended when someone called out from behind: "Yo, Junior, what are you doing?"

Fiorino wheeled and saw Sgt. Michael Dougherty aiming a handgun at him.