The Nazis, the communists, almost every evil group in the past began by portraying themselves as victims. Every victim needs a villain, either real or imaginary. It also allows them to do things they otherwise would not be able to. Today it might be “He wouldn’t bake me a cake”. Tomorrow, “his life is not worthy of living”.
"Every victim needs a villain, either real or imaginary."
Ping to the manipulation of people by creating victim hood propaganda.
The more victimized they can portray Group A, the more villainous they can portray Group B, providing a pretext for draconian action against Group B.