We have got to keep in mind several facts to make clear why the streets of Germany looked normal during the Holocaust.

First of all, the Holocaust was not a policy that was announced or acknowledged publicly. Officially, the Jews of Germany were being "relocated to the East", forcibly deported out of the country to make it "free of Jews". There was no talk of killing.

Secondly, there were actually not that many Jews in Germany in the first place and by the time the Holocaust started, about half of Germany's Jews had already fled to other countries. There were about 250,000 Jews left in a population of 70 million. The millions of Jews the Germans killed were largely non-German Jews from countries occupied by Germany.

The killing itself did not happen in Germany, it happened by gassing in the death camps in occupied Poland, by mass shootings in occupied parts of the Soviet Union, and through starvation and disease in the Jewish ghettos and forced labour camps established by the Germans in both these places. Jews from other countries were brought to Poland to be gassed or worked to death.

All of this happened far away from the eyes of ordinary Germans in the streets, who continued to live their lives normally, or as normally as possible during wartime.