About twenty years ago in Tucson, Arizona, the entire senior class of a large high school knew for several months that an older dropout from the school, who had kept up a “friendship” with the younger students, had been killing their classmates, and burying their corpses in the desert. Yet none of them reported the crimes to the authorities, who discovered them by chance. The students, all nice middle-class suburban kids, claimed that they could not divulge the murders for fear of being cut by their friends.
