In my experience there is a close to 100 per cent correlation between the stated belief that society is suffering from a decline in “civility” and a willingness to proclaim that we are all being oppressed by “political correctness”. John Howard neatly illustrates this. A week or two ago, he was denouncing public schools as hotbeds of political correctness, and the excessive concern with offending religious minorities that (allegedly) led to the curtailment of Christmas celebrations. Now he’s calling for more civility.
The common analysis underlying both demands for “political correctness” (this actual phrase was never used, except jocularly as far as I know, until critics seized on it, but terms such as “sensitivity” or “inclusive language” cover much the same ground) and for “civility”, is that offensive words give rise to offensive acts. In both cases, there’s some ambiguity over whether the problem is with the offence to the recipient or with the reinforcement of the hostile/prejudiced attitudes of the speaker, but the central claim is that modes of speech are an appropriate subject of concern and that some form of government action to encourage more socially appropriate modes of speech, ranging from subtle pressure to direct coercion, is desirable. The only difference between the two positions is that they have different lists of inappropriate words.
I don’t have a sharply defined position on any of this, except that I find people who think that being “politically incorrect” is exceptionally brave and witty to be among the most tiresome of bores. I doubt that changes in speech will, of themselves, produce changes in attitudes. The obvious evidence for this is the rate at which euphemisms wear out and become as offensive as the terms they replaced (for example, ‘handicapped’ for ‘crippled’). On the other hand, I think there’s a lot to be said for avoiding offensive words and forms of speech and can see a place for (tightly drafted and cautiously applied) laws prohibiting or penalising various forms of collective defamation.