Okay, kiddo, sometimes people are mean to other people because they are different. They might be mean to them because they look different, talk different, or even because they are a boy or a girl. When people are mean to someone because of their gender and their skin color, that's called "gendered racism".
For example, some people might treat a girl differently than a boy because of the color of their skin. This can be very unfair and hurtful. There are also times when people judge others based on their gender and race, and this can be very hurtful too.
It's important to remember that everyone is different and unique, and we should treat everyone with kindness and respect, no matter what they look like or where they come from.