This is serious stuff, and I think all the people posting jokes are showing bad taste... whether you are black or white. I think the remix is in bad taste also.
It's not alright to use either word, because it is attempting to offend people just because of the way the were born. It is worse than fuck or shit because those are relative. It is worse than g-- d----, because this is based on faith (but I don't use it because although I don't care, I don't want anyone messaging me about religion.)
You want people to stop using the word, then don't add to the problem.
I would cite regulation, but I know you will simply ignore it.