Serious question for the etymologists of P99

[Elfminster]

I recently said the word "n*****" while singing along to a gangster rap video I saw on the TV but I was told off for it by somebody who said I don't have the right to say that word because I'm not black enough. I wasn't aware of the language laws and I certainly don't want to offend anbody for disobeying them so I apologised profusely to the kind person who graciously educated me on the difference between right and wrong.

So as a half-caste person, should I say 'nig' or 'ger' from now on?