"Other than from those with a political/social bias in favor of "PC-ism", that is." I don't think every challenge to the norm or traditional social roles can be dismissed as being political correctness. I think of PC as just oversensitizing every perceived social problem (and usual someone else's problem and not a personal conviction) as a means of insinuating the other person's complete ignorance. A lot of PC IMHO has been used to re-write history and add commentary by people who just want their "just desserts." It's difficult to address the topic of diversity when the other person merely wants to argue as to how persecuted they are. But I think it's equally discouraging when the topic is dismissed as a means of just perpetuating political correctness rather than as an opportunity to merely acknowlegde the other's view...