The stars? They were introduced by the Muslims in the 8th Century, spread to Europe. Mandatory Jewish identification was eventually phased out at the end of the 18thC.
The Jews themselves who floated the idea to re-introduce it as a sign of support
During the Nazi declared boycott upon Jewish stores on April 1, 1933, yellow Stars of David were painted on windows. In reaction to this, Weltsch wrote an article entitled "Tragt ihn mit Stolz, den gelben Fleck" ("Wear the Yellow Badge with Pride") which was published on April 4, 1933. At this time, Jewish badges had yet even to be discussed among the top Nazis.
The stars? They were introduced by the Muslims in the 8th Century, spread to Europe. Mandatory Jewish identification was eventually phased out at the end of the 18thC.
https://www.thoughtco.com/history-of-the-yellow-star-1779682
The Jews themselves who floated the idea to re-introduce it as a sign of support