I think it has to do with Soviet propaganda which always tried to foment clashes between Jews, whites and blacks, plus the muslim element from Malcolm X and Co. Some Jewish leftists insist that they’re NOT white, probably because having spent so much time in college, they know which way the wind is blowing.
No it’s from white supremacist telling us we are not white.
Me I consider myself white, although I am on the swarthy edge. Blue eyes. Black curly hair. Typical Israeli in other words.