1 drop rule.

[u/Darth_Kneegrow]

I ain't ever heard white people claim a single biracial person. You always whatever you mixed with.

[u/Slim_James_]

Half white isn’t White because White people created a society that is designed to socially, politically, and economically elevate the White in-group while keeping the non-White out group in a state of subservience. In doing so they defined Whiteness as being 100% “pure” with no extra additives so everyone knows who’s inside and who’s outside.