It is difficult to tell where/ when crime lurks, The area where the two tourists were killed is really crime ridden (highly recommend avoiding extreme southern Mexico) I had been reading Brian Becker's journal on crazy guy on a bike (he was in she same area), and had two bandits come out from the roadside wielding large sticks. He was lucky to get away with some bruises on his back, a dented fender and wheel out of true.