Okay, so in Argentina, there are different groups of people who look different from one another. Some have lighter skin and some have darker skin. Some people have been mean in the past and said mean things or treated others unfairly just because of their skin color or where they come from. This is called racism. It's like someone being picked on in the playground because they have glasses or wear different clothes.
Racism is a bad thing because it causes hurt feelings and can make people feel left out or not valued. It's important for everyone to be treated equally and with kindness, no matter what they look like or where they come from. Some people in Argentina are working hard to make sure everyone is treated well and has the same opportunities. It may take a while, but with some effort and understanding, we can help make the world a better and fairer place for everyone.