Hitler's order to have all Jewish business boycotted.
Hitler had an obsessive hatred for the Jewish people for many reasons; like believing the Jews were responsible for Germany's loss in World War I and their economic crisis. Because they wanted someone to blame, the Germans started to believe Hitler's accusations and hated the Jews also. His solution to all these problems was to banish the Jews from society (Website One). Hitler also believe Aryans to be the dominant race, and the Jews to be an inferior race that were a threat to the survival of the Aryans.
Hitler was helped in his planning of the Holocaust by the fact that antisemitism was acceptable in Germany and few spoke out against it, but that is not a complete answer. We must look instead to the fact that the Nazi philosophy permeated all aspects of life in Nazi Germany until there was no one left to protest the Holocaust (Website Two).
The Nazis also believed that the Jews were trying to take the world. They believed that the Jews were not just the followers of an abhorrent religious doctrine, or that the Jews had grabbed too much economic influence, or even that they were too intrusive in politics or culture: what made the Nazis hatred of the Jews so different is that they believed that the Jews were biologically and racially distinct and that there was a kind of biological struggle for dominance over the entire human race between the Jews and everybody else (Website Three). The Nazis believed that every Jewish life was a threat to the fatherland and to humanity, and therefore needed to be exterminated.