I grew up with a bunch of kids of different backgrounds and ethnicities. It never occurred to me that we were different because we were all kids, just playing and learning together.
My family is a mix of Native American and several western European immigrants.
My dad grew up in a "mixed" neighborhood, and my grandmother lived there for years after I was born. All the kids in that neighborhood played together, no problem.
People in my family are various shades of color, from dark to lily white. My dad and his family are darker skinned with dark/black hair, mom is light skinned with light hair, and my siblings and I are light skinned with blond hair and blue eyes. I guess it just wasn't a big deal to us.
Racial divides in the US are, in my opinion, perpetuated by people who have based their careers on keeping the old prejudices alive while pretending to work for eliminating them.
But that's just me.