@hawkeye10,
Sorry, I mean any imagery or speech is legal in my country, as long as the intention is NOT to spread racial hatred. In particular, it is understood that racist imagery can be highjacked, as Dumas and Charb have done, to turn the table on racists.
Likewise, if one guy says to another "you're my nigga" in a non-racist way, just to crack a joke or something, I don't see a problem. Cultures have a way of turning around phrases and images, of recasting the linguistic dices, of constantly recycling old cliches and ideas into radically new ones. That's why banning certain words -- while understandable when the word has very negative connotations -- is ultimately futile. To paraphrase Fresco, a word is just a token used to communicate a large number of possible meanings. The meaning will depend on the context, and such a meaning is more important than the word itself.
Somebody mentioned "word fetishism" yet?