Well, a long, long time ago, there were some people who didn't like Jewish people. These bad people wanted to make sure that everyone knew who was Jewish, so they made them wear a special hat called a judenhut.
The judenhut was pointy and made out of a special type of cloth. It was a way for the bad people to identify Jewish people and make them feel different from everyone else.
But this was really not nice, and many Jewish people didn't want to wear the judenhut. They didn't like feeling singled out or different from everyone else.
So, over time, people decided that wearing a judenhut was not a good thing, and thankfully, it's not something that happens today. We all deserve to be treated equally, no matter who we are or what we believe.