To what did Wiesel liken the story of the Germand throwing bread into the wagon? Why was it upsetting to him?

The episode where German workmen throw bread into the train demonstrates that the prisoners are maniacally focused on getting food, at the expense of even their closest relations. They have become predatory animals: "Wild beasts of prey, with animal hatred in their eyes; an extraordinary vitality had seized them, sharpening their teeth and nails." Having been starved for ten days, the prisoners are willing to kill each other for bread. A young man even kills his father for a piece of bread. In this world there is no morality, but neither is there a need for the prisoners to live by any standard of morality. For they are no longer living in a world of social responsibility and respectability, and it makes perfect sense for them to behave as animals, without any regard to familial ties. The Nazis have created this environment, and the prisoners have no choice but to disregard the normal rules of human society.