I grew up in the Strawberry manors in sac where there was a mix of nikkas, Laotians, hmongs, tongans etc. We all grew up together, played hoop, hustled, shot at nikkas, etc. (not me, them) Growing up in the same hood being exposed to the same shyt created a family aka culture. We all called each other my nikka. In my opinion it's not black and white, and on an even grand'er level, words only take the power we give them.
Thats different,thats the equivalant of family business. If your people really of the culture like that they know when to use it. Non black homies aint going to be throwing it around when yall are around other black people.Or put you in a position where black people who are uncomfortable with it,are looking at you crazy for allowing non blacks to call you nikka. Most non blacks AINT that solid or of that background,which is why they are denied with me at least.