This is why there is so much confusion.

Calling a donkey and a horse does not make it a horse. It's still a goddamn donkey. Do you nyggas even know what you are saying when you say "Race is a social construct". Probably not. A bunch of liberal non-sense spouted by those with a couple with anthropology classes. Now wonder racism in America is so rampant. You fools continue to be dishonest.
If race is a social construct(meaning not a good thing to you) why the fck do you continue to endorse it? Why don't you call a person what they are instead of what society views them as? You not even making sense. Jesus.
Being mixed doesn't mean anything? Lol what?! According to you koons all being black is having bananas thrown at you during a soccer match. Being mixed has never been defined because of white supremacy which you sound like you are upholding. This is why there is so much confusion because you are telling someone made up of two different races to identify as one.
Sounds familiar doesn't it? You burn crosses on lawns in your spare time?
You are ignoring the truth and constructing cultural and racial identities based on societies views of them when you say
"There is really no such thing as a mixed race and you cant be both black and white. Socially you can be one or you can be neither. People who pick the latter are usually pretty confused."
Read some Frantz Fanon or Ruth Frankenberg