Looking at who is under the umbrella of blackness, I'd say the fluidity of race is actually a central pillar of blackness. We've welcomed just about everyone who is remotely or tangentially black to be black with us, even when they don't want to lol, basically no other group does this.

Whiteness has existed as a multiplicity of identity too, there is no denying that...

But the societal rewards and punishment around race identification makes the type of fluidity you're talking about impossible. There will always be an ulterior motive, an incentive, how ever so slight. There is no societal incentive to identifying as a gender fluid person like there is wit race. Society hates them and is infatuated with them but hasn't gotten to the point where they want to be them. Society hates black folks and is infatuated with us, but it also wants to be us.




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