for years, many anti-capitalists have misconstrued the word "rich" to mean something that its not. Many people now believe that just because someone can be described as rich, they are unrightfully wealthy. Rich is commonly associated with spoiled teenagers (mtv's
"spoiled rich girls" series)

There are plenty of other terms that have been redefined over the years by those who find their current meaning inconvenient.

The use of language as propaganda is extreamly effective and poses a serious problem for those who don't use it. For instance the opposite of Anti- is Pro-, Pro-Life are people who wish to abolish abortion. Who then is the opposite (someone who wishes to retain the right to have an abortion)? Anti-Life? Try pushing that on someone. On the contrary, Pro-Choice fights with the same wordgame; the opposite is Anti-Choice.

Recall that only a few years ago that in a resaraunt there was a smoking and non-smoking section. Now they are called smoking and smoke free.

Notice that the term "human embryo" is rarely used by pro-lifers. Instead they use "unborn child" or "unborn baby".

I redefined "God" to mean "me". This is why I'm not an Atheist. :-P

they = anyone who finds a benefit of redefinition.

here is a somewhat obvious use of redefinition:

There was a "study" done by an anti-smoking group that showed "3000 children a day". Here is how the results were determined: divide the current number of smokers aged 20 by 365.

Now, how did the people in this situation define "children"?
In this case, children are going off to jail for adult level crimes, they are eligable for the draft, they are not supposed to be written off on taxes anymore by their gaurdians, they can appear in pornography, and strangely enough they are of legal age to buy cigarettes.

This case conveniently redefines the word "children" to mean someone below the age of 21. When in all actuallity the United States government (also redefinition in my books) has defined it as a person below the age of 18.