Answer:
Antisemitism, rise in German patriotism, and prior use as scapegoats.
Step-by-step explanation:
The German people began to show harsh feelings towards Jews because they were blamed for Germany's defeat in World War I, which made Germans want to punish Jews for the trouble they caused Germany. Prior to World War I, Hitler encouraged patriotism towards building a powerful Germany state to overtake the rest of the world. Since he wanted the Germany to be respected, he thought getting rid of Jews was the best option, since Jews were regarded as "filthy" and would ruin Germany's pure blood. Even those with partial Jewish decent were treated like outcast at the time. Due to all these reasons, Germans came to despise Jews, even though they were in fact innocent.