If you call "inventing civilatizion" living in shitty nomadic tribes in Africa while everybody else was learning how to flourish through new technology, then yes, you guys did a great fucking job. The world owes you one.

Shut the fuck up.

End a they day, if your gonna get offended,then it will be used to offend.
As hard as it is, maybe when the words used to attack you, show no emotion,show no care, dont elaberate on it. Dont diagnose they moment they said it.

No reaction =no reason to say it.

As hard as that would be, cause I know personally, when someone disses my race (maori) all I want to do is swing a bat at them.

So yeh, the one using the word in a derogatry form, are wrong. So maybe try to not give a fuck and they will not have a reason to use it.
Stay getting all up in arms and they will see that by using the word they can fuck you off and know theres a reason to use it.

2cents

Why the hell would I just walk up to someone and say, "wasup nigger"?

Dont that just sound dumb to you?