nigger refers to nigga, I don't distinguish them because they're the same word. Nigga is just a ghettoized way of spelling it You're literally equating a modern day white person who very likely resents racism with every fiber in their being, to a supremacist scumbag who supported human slavery, because they happen to both be white. Maybe I'm missing something but this is highly irrational and also pretty racist. It's like saying ''Oh I'm not comfortable with black people wearing a hoodie because they remind me of those thugs''. I have a feeling this analogy doesn't compute but hopefully you understand the gist of it. And if you agree that context matters, then you'll have to concede that there's no issue to be had with a white person saying nigger, so long as it's not racially motivated. Sure, strictly definitionally speaking, nigger is a contemptuous term for black people. But in slang, words are used differently all the time think cunt as a term of endearment among Australians why is nigger an exception?
Taking issue with a white person saying nigger purely because of their skin color doesn't make any sense.