So you're on a bus with your back turned and a gang of kids behind you are about to steal your wallet. You don't know exactly how many of them sitting on that bus are part of the gang or whether they are carrying weapons. What do you do? Personally i'd give them my wallet, get off the bus, call the poice and cancel all my cards before they had a chance to use them. I can take care of myself but when there's potentially a gang of 6-7 of them who could also be carrying a weapon then it aint worth it.