Recently, Mel Gibson made it in the news for verbally abusing his ex-girlfriend, making extremely sexist and racist comments. This isn't new behavior for him; a few years ago he went on an anti-Semitic rant against a Jewish police officer that pulled him over for drunk driving. Among the words he used this time around were f**k, b***h, wh**e, and a word I don't even like acknowledging because of how sexist and horrifically bad it is. He also used the word n****r.
"Is that really a bad word, though?" one of my friends asked me. "Since, I mean, it's certainly not a nice word, but is it something Bleep! objects to?"
The answer to that: OF COURSE!!! N****r is a highly offensive term for African-Americans. While I don't mention the word on the Bleep! site, that's simply because if I included one word that discriminates against a particular ethnic group, I'd have to include every word that discriminates, like f*g (for the gay community), k**e (for the Jewish community), and dozens of other terms. (Unfortunately, society's made a lot of ethnic slurs.)
So yes - when Mel Gibson, or anyone else, uses words like n****r, it counts as cursing.