I've thought about this before and respect the open-mindedness. How do you justify words purely meant to harm others and not express ideas, like the n-word?
If you think that the n-word is only used to harm others then I assume you haven't listened to any late 20th and 21st century music. Context matters. That said, its use to racially insult people is shameful and not something I support.
That's a great point, I didn't think about that. It seems like it might be difficult to prove whether or not people had an intent to harm when you allow this kind of speech though.