Answer: They believed in their racial superiority.
Step-by-step explanation:
The Nazis believed in German superiority over other nations. Hitler presented these beliefs in his book "Mein Kampf" (My Struggle) and later these ideas propagated throughout Germany, becoming the collective belief of the regime's followers. Germans believed that they should not be confused with other nations, especially Jews.
Racial purity was so crucial that highlighting it was one of the cornerstones of Nazi propaganda. They also believed because they felt they were superior to the right to organize a new order in Europe, and that there should be no Jews in that Europe and that celebrities should serve Germans.