Symbol that Jews were forced to wear during the Holocaust, so that they could be identified as Jews. The Germans used the Jewish badge, often in the form of a yellow Star of David, to harass and isolate the Jews. In that way, they were able to create a wide rift between the Jews and the rest of the population. Sometimes, other opponents of the Nazis were also forced to wear special identification badges. The Nazis' inspiration for the Jewish badge came from medieval times, when both Muslims and Christians decreed that Jews must wear articles of clothing that would set them apart and shame them for being different.
This is important because this teaches us our history of what had happened and who was the enemy of everyone. And not just this but it happens when we need to learn.