My school has a program called "The R-Word" where they're trying to stop its usage.
Here's the funny part:
When they advertised the program during our morning announcements, they had crafted the most unintentionally insensitive ad ever. They had an ACTUAL RETARD in our school make....well....retard noises (incomprehensible moans and groans) over the intercom, followed by someone saying "DO YOU THINK THIS IS FUNNY? STOP THE R-WORD NOW!"
I don't use the word "retarded" in common conversation because of my own personal morals, but if the school wants other students to do the same, well, this is the way NOT to do it.