I stated the one group I was familiar with :/ and no it's not since it existed. Like stated there was the one drop rule. I had no idea it was called that thanks (: Black was black no matter how little there was in descent. Curly hair at the time was deemed a black trait, anyone with it was assumed to have black in their genes. I'm just saying the maaaybe the stigma's still remained a tad bit more than we'd like.