Source from: https://www.facinghistory.org/holocaust-and-human-behavior/chapter-5/wave-discrimination

In Nazi Germany, anti-Semitism reached a racial dimension never before experienced. Christianity had sought the conversion of the Jews, and political leaders from Spain to England had sought their expulsion because Jews were practitioners of Judaism, but the Nazis—who regarded Jews not only as members of a subhuman race but as a dangerous cancer that would destroy the German people—sought the “final solution to the Jewish question,” the murder of all Jews— men, women, and children—and their eradication from the human race. In Nazi ideology that perceived Jewishness to be biological, the elimination of the Jews was essential to the purification and even the salvation of the German people.

Hitler and the Nazis claimed that the “Jewish race” was especially dangerous. It supposedly exploited and harmed other races. Thus, the Nazis referred to Jews as a “parasitic race.” In particular, they believed that Jews were parasites that were destroying the Aryan race. This false and prejudiced belief was why the Nazis persecuted Jewish people. They wanted to separate Jews and Aryan Germans. They tried to force Jews to leave Germany.