Pejorative Quotes
What has happened is that we have seen a shift in the past twenty years in the very concept of hacking. So hacking twenty years ago was a neutral, positive concept. Somebody who was a hacker was someone with advanced computer skills, which could expose vulnerabilities and could explain why systems worked well or worked badly and they were generally regarded as an asset. Over the past twenty years, a combination of media and law enforcement has changed the perception of the concept so that it has almost always, if not invariably, a pejorative sense attached.
Misha Glenny
The so-called pejorative tendency has yet another cause. It is in the nature of human malice to take pleasure in looking for a vice or a fault behind a quality. The French have the adjective prude, which had formerly a good and noble acceptation, since it is the feminine of preux. But the spirit of the narrators (perhaps also some feeling of rancour against the loftier virtues) turned this adjective aside towards the equivocal sense that it now bears. Words which refer to the relations of the sexes are especially exposed to changes of this kind. We remember what a noble signification amant and mattress still possessed in Corneille. But they are dethroned, as was Buhle in German. Here we see the inevitable results of a false delicacy; honourable names are dishonoured by being given to things which are dishonourable.
Michel Bréal
A current pejorative adjective is narcissistic. Generally, a narcissist is anyone better looking than you are, but lately the adective is often applied to those "liberals" who prefer to improve the lives of others rather than exploit them. Apparently, a concern for others is self-love at its least attractive, while greed is now a sign of the hightest altruism. But then to reverse, periodically, the meanings of words is a very small price to pay for our vast freedom not only to conform but to consume.
Gore Vidal