Imagine you and your friends are playing a game and you are all from different countries. One of your friends is from Poland and she speaks a different language than you. This is like what is happening in Ukraine with the Polish minority.
In Ukraine, some people belong to a group called the Polish minority. This means they are Polish and they live in Ukraine. They might speak Polish instead of Ukrainian. They are like your friend who speaks a different language than you.
Sometimes, people in Ukraine who are not part of the Polish minority do not treat them very nicely. They might say mean things or not let them do the same things as everyone else. This is not fair because everyone should be treated the same and be allowed to do the same things.
To help the Polish minority feel better, some people are working to make things better for them. This might mean making sure they are allowed to speak Polish or making sure they can go to school and get good jobs. This is important because everyone should be treated fairly and have the same opportunities to succeed.