@BorisKitten,
You seem incapable of understanding that derided people will often, as a defensive tactic, embrace the derogatory terms used against them.
The obvious example is the use of the term nigger within the African-American community.
When Richard Pryor referred to a fellow black as "nigger," do you think he was saying "Hey you slave, you less than human individual, you over-sexed buck!"
Do you think when gay activists refer to themselves as "Queer," that they are acknowledging they are the unnatural degenerates the people who use the term derisively imply?
For some reason you seem to have an unswerving faith in the true revelation of bumper stickers and their application to an entire group of people.
Do you really think that someone with a "Proud to be a Redneck!" bumper sticker is saying "I'm proud to be an incestuous, toothless racist!"
Redneck jokes can be funny, but so can Italian, Polish, Gay and Black jokes.
So what?
Drawing artificial distinctions between terms of derision is intellectually dishonest, particularly when the reason for doing so is to allow sanctimonious liberals to indulge in deriding their targets of choice.