I will not bother to trace a line somewhere, even it indeed exists; there are terms that would more properly be used as an insult than as something normal. But also there are those which certainly are not intrinsically offensive, whose offense depend totally on the context it's used. Summarizing, I think that sometimes, the comdemnation of words as "not-PC"/intrinsically offensive may actually increase the perception of unfair discrimination or hate in people of unfairly discriminated groups, even when the context does not imply anything really offensive. Some words may have been used in offensive contexts, at the same time they don't carry anything intrinsically offensive, the "political correct movement" gives somewhat of a "canon", "oficializing" the offensive factor of a given word, irrespective of contexts. I've even read (real) arguments that the non offensive context does not matter, that the word by itself is used due to some sort of unconscious hate, or even as a "trick" to find a way to offend people at the same time that it can't really be "proved", they can be accused of offending people, as the context does not imply. As the quick abandon of the now-only-offensive term required by political correction is unnatural, it's expected to perdure in daily usage a bit longer. While it is not abandoned, people "brainwashed" by PC that would be under the neutral "label" of that word, would possibly feel somewhat offended, touched by the use of the word even if the context does not imply anything offensive at all. Since the PC movement is well intentioned after all, aiming to not hurt the feelings of people who are more prone to be target of unfair discrimination, these people would suffer at least twice: once by the overall problems related with unfair discrimination, and again by possibly having the feeling of discrimination provoked by the condemned word, even when it actually does not exist. And while "brainwashing" sounds somewhat like a joke, it is not. I don't think that it effects everybody equally, I think that are those (perhaps most of them) who don't really care, those who were just indoctrinated in a more normal way, and perhaps those whose acception of the term may had been even made easier by psychological traumas of some events related with being of a certain group that commonly suffers some sort of unfair dsicrimination. So, it's even worse, not only this PC policy not helps whom it wants to help, but actually harms them, but likely it harms most those who already had suffered the most. But in the other hand, I may not be the best person to talk about, since I do not belong to any group that would "require" a PC term in exclusion to un-PC ones (at least not now, but perhaps if I move to other country or region I would be in some similar category), except for being an atheist, a word that, by the way, was intendedly offensive in its conception (or so I've heard) and I just don't care. I mean, I don't care for the word alone, I don't ask to people use preferably something like "bright" or "non theist", not that actual offenses would not be offensive.