Years ago at work they had police officers come and talk to us about what to do if we were mugged. Our work could take us anywhere and at anytime. They suggested to carry a second wallet with just a couple of $20s. Instead of handing it to them and sticking around to see what else they may want to do to or take from you next, they suggested that you toss the wallet on the ground in one direction and run like hell in the other direction. The thinking is that they'll go after your wallet and not you.
