" Another characteristic of conflicts such as these,” he said, gesturing toward the board, “is the propensity to demonize others. One way we do this is by lumping others into lifeless categories—bigoted whites, for example, lazy blacks, crass Americans, arrogant Europeans, violent Arabs, manipulative Jews, and so on. When we do this, we make masses of unknown people into objects and many of them into our enemies. "

― The Arbinger Institute , The Anatomy of Peace: Resolving the Heart of Conflict