Okay kiddo, so in Russia there are some people called Jews. They have a special religion called Judaism, which is different from the religions that most other people in Russia follow.
A long time ago, many Jews lived in Russia and faced a lot of discrimination and persecution. This means they were treated unfairly and badly because of who they were. It was really unfair and made life very difficult for them.
Eventually, they were allowed to leave and move to other places where they were treated better. But even now, there are still Jews in Russia who face some discrimination or unfair treatment because of their religion.
So, it's important to remember to treat everyone with kindness and respect, no matter who they are or what they believe.