A yellow star that indicates they are Jews.
Germany and all the countries that Germany had occupied.
A star.
No, but they did have to wear a star on their clothing.
The Star of David is a symbol of Judaism and it was used on armbands that Jews were required to wear, in Europe during WW II, so that they could be more easily identified and abused.
The Jews were required to wear the Yellow Stars of David
Hats
During World War II, the Romani people, often referred to as gypsies, were required to wear a yellow badge, similar to the yellow Star of David that Jews were forced to wear. This badge served to identify and discriminate against them, leading to widespread persecution and violence. Many Romani were imprisoned, enslaved, or killed during the Holocaust, as they were targeted by the Nazi regime for their ethnicity.
Modest clothing for women is required. Men are required to cover their heads.
yellow stars
There was the Yellow Star decree which forced Jews in Germany to wear a yellow star, in other regions they had to wear a blue star on a white background. Most Jews in the camps had to wear a prisoner uniform.
The Jews of Europe, during the holocaust.
The Jews were forced to wear that during the Holocaust.