my mullato sob story

Recently I was in a discussion at school with some black people in my class. the discussion started around this white lady from Louisiana saying she was Creol and multiracial and whether or not she was black. and I thought she would be considered black she looked white but had black features and if it were the 1950s her documents would say black it didn't matter your skin tone.

 the conversation then devolved into a race science argument that was equitable to a black nazi youth. questioning how many black grandparents would make you black or if having a white mother took away from your blackness more than having a white father would, as a multiracial person who most of the time is perceived as black I found it harmful that they went as far to say that I'm not black; as if the General Public would care about the tense social interactions of mono-cultural and multicultural/racial black people. like the conversation with the rock. he's not black he's Polynesian but in America, he's black because white audiences (the General Public) see him as black. my light skin nor loose hair or the fact that I have more ambiguous features doesn't remove the fact that I'm black!! like what would the point be of drawing a line in the sand between monoracial black folks and mixed folks? so the light skins can get oppressed separately? and of course, after saying my piece and sharing my experience as a black person from the end of someone with "light skin privilege" whatever that means they crunched my experience down to a "mullato sob story" that took away from the struggle of "real" black people. I can't stop thinking about it cause I've never been silenced over the fact that I have white grandparents, lol is this how white men feel.