Cut it out already!
I have never been partial to using the word nigga or nigger as a slang word or insult. If I ever stepped out of character to use it would have been used in its proper definition : ignorance. Anyone who has every used the word had their own personal reasons for doing so. As an advocate of free speech I believe you have the right to say what you will, but the moment you say something to me that I feel is disrespectful, there will inevitably be a problem. Knowing myself I like to carry myself with a sense of dignity so I may not say anything at all in response to the word being thrown at me.