From 19 September 1941, all people over six years of age who were considered Jews according to the National Socialist race ideology had to wear the "yellow star" on the left side of their clothing in public. This meant that Jews could be recognized at first glance - resulting in open harassment and permanent humiliation. The "Reichsvereinigung der Juden in Deutschland" (Reich Association of Jews in Germany) was obliged to issue the "Judensterne" at ten pfennigs each. "Incorrect" wearing of the "yellow star" led to severe punishments. The marking with the "yellow star" was part of the preparations for the deportations that led to the systematic murder of European Jews.
As early as 1933, after the National Socialists' seizure of power, Jewish prisoners in the concentration camps were marked with a yellow triangle. In German-occupied Poland white armbands with a blue Star of David became compulsory for the Jewish population from 23 November 1939.