Generally a bad idea to try to shoot shoplifters. It will tend you get you in trouble with the authorities. Is a bottle of liquor really worth someone’s life? Especially given the shot went errant and narrowly missed killing an innocent third party.
It’s also not a good idea to play cop. When cops make mistakes, they get to claim qualified immunity. When you make a mistake, you get to claim top or bottom bunk in the prison. Not exactly fair, but that’s how it goes.