One of the legacies of the Holocaust is the sheer scale of one group of people's inhumanity towards other groups of people. In the case of the Jews, the German government and German society attempted to redefine them as sub-human, and then as creatures who deserved to die.
But Night doesn't just focus on the Nazis and their seemingly endless diabolical behavior (concentration camp doctors—those who swear an oath to do no harm—are some of the worst offenders imaginable). The book also looks at what it is like for an adolescent to live in a situation where he and those around him are no longer treated as humans. The loss of humanity among the victims leads to all kinds of cruelty and callousness among the prisoners as they struggle to survive—prisoners are vicious towards each other, those with small powers abuse them, children abandon parents, starving people kill each other for scraps of food. In the cattle car on the way to Auschwitz, people strike a woman to keep her quiet, something they never would have done in the village. As Eliezer's father lies in his sickbed, near death, other invalids beat him up because he smells bad. Through Night, Elie Wiesel makes the point that when people are treated as subhuman and are subjected to the constant threat of death, they may lose the ability to act like a decent person—even towards others in the same situation. Empathy is one of the finest human qualities, but it can be crushed.
Inhumanity Quotes in Night
"Where is God now?"
And I heard a voice within me answer him:
"Where is He? Here He is—He is hanging here on this gallows. . . . "