It's not "bitch," which is in common parlance, and can be used against men. It's the C-word that men can't use with women, just to be clear. And women can, though we use it very judiciously and when we really hate someone. (I think the way British men use it against each other is both acceptable and hilarious.) Not to digress, though. I thought the Ice Cube clip was perfectly apt and eloquent. ("We've taken it back, and you can't have it anymore.")
I get why Murat was asking, as he's a person that doesn't subscribe to PC, in general, and I get why Tented was asking why don't we all just leave off using them. Personally, I accept that people "reclaim" a slur, and have no problem with that, nor any problem with understanding that it doesn't mean I get to use it, myself, if I'm not a member of that group. Offensive words, specifically those used to denigrate people of a different race/ethnic/religious/gender group have power, and none more than the N-word. Obviously our relationship with them is complicated.
I do think this comes back to our discussions about political correctness, which is something that some here very much object to. How can a word be used freely by some, and prohibited by others? I don't have a problem with that reality. As I have said before, the notion of "political correctness" ever began as a way of making people rethink how they use language. I think that's a good thing. And I don't think any of us should have a problem identifying people in minority groups with words that they choose for themselves, not the ones we choose to impose on them.