It's all context mate. You could call a New Zealander a "Black" no worries, do it to an African. You could get stoned to death.
Our police service are affectionatly known as black bastards. I would hazard a guess and say that not one out of the whole force are black.
If someone is black, they are black, nobody thinks that is racist, it is when you put the word bastard after it, it then becomes racist, its all about context
there football team is the all whites there cricket team black caps basket ball tall blacks hockey black sticks, net ball silver ferns so its not down to skin colour
I'm from new Zealand, and even I can't tell you, it's just the kit, we have football - all whites, hockey - black sticks, basketball - tall blacks, netball - silver ferns.