Sometimes

"Did you know that sometimes people are mean to other people just because those people have brown skin?"
"I have light skin, like Elsa! Mama has light skin.  Mommy has light skin.  L has brown skin. M has brown skin. C has brown skin. Miss T has brown skin.  Miss J has brown skin.  Lots of people have brown skin."
"Do you know that sometimes people with light skin hurt people with brown skin, just because they have brown skin?"
"That's mean. You can't hit someone because they have brown skin.  If someone hits me I say "NO!" and if they don't stop I tell the teacher. It's not nice to hit."
"You're right Lovie, I'm glad you know all that."