Okay, kiddo, let's talk about something that happened a long time ago in a place called the Russian Empire. There were some people who lived there called Jews. They had different beliefs and traditions than most of the other people in the empire.
Unfortunately, many people in the empire did not like the Jews just because they were different. They said mean things about Jews and blamed them for things that were not their fault.
Sometimes, people would even hurt or kill Jewish people just because of who they were. This is called antisemitism. It is not nice or fair to judge people just because of their religion or culture.
The Russian government also did not treat Jews very well. They made laws that made it hard for Jews to have good jobs and own property. They even made them live in certain parts of towns called ghettos.
All of this made life very difficult for Jewish people in the Russian Empire. They felt scared and like they did not belong. It was a sad and unfair time in history.
Thankfully, things have changed a lot since then and we now know it's important to treat everyone equally no matter who they are or where they come from.