Just wondering, what glitch? I believe you, just wondering what/how, never heard of it. Does it screw your game or 100% or whatever?
No it doesn't screw up 100%. It involves going into a food store while the Vigilante is on, then you enter the store and the game will eventually kill the criminal. It's the easiest way to do the Vigilante Mission. It may take a few attempts and you must have a cop car a few virtual meters away from the front door. You can continue doing this until you want to end the Vigilante mission.