Oh, tell me more, racist idiot!

In popular media over the past few years,there has been a dramatic paradigm shift. No, this is not going to be an entry about how there are now vampires in everything from Garfield comics to toaster oven instruction manuals. We're all tired of it, but complaining about it has obviously proved useless. I'm talking about our old friend prejudice. The subject was taboo for so long that now it's 'ok' to make fun of ethnicity and creed again. The racist comedians (I'm looking at you, Carlos Mencia and Larry the Cable Guy) excuse themselves with the rationale that they are saying what everyone is thinking. I think about setting cars on fire and finding ways to disrupt the power grid. I also think about starting a terrible improv group and murdering people that work for lobbying firms. I would never think a comedian making jokes about these things is ok, just because I think them. Personal bias, much like the constant dogfight of voices in my head, is not something to be proud of, it's something that needs to be healed so our kids are slightly less terrible than ourselves.
The problem is not new, I know. I have just noticed it creeping into normal interpersonal interactions more than they used to. At the risk of being labeled a knee-jerk, PC, whiner, let's look at some examples:
The "I have lots of black friends" guy:
Yeah, and I'm sure none of them would have an issue with you dropping N-bombs in public. Even if they don't, I do. How far does this justification reach, anyway? If a Klan member or Mel Gibson had black friends, does that make their activities ok?
The "A Mexican took my job" guy:
If a guy that just got here, probably with a limited command of the language, took your job, then I think you probably should have stepped up your game. You may also need to examine the possibility that your old boss just took the opportunity to get rid of a jackass who can't take responsibility for his own life.
The "I am well educated, so all of my theories about other races are actually facts." guy:
You can make all the circular, self-serving, and overly verbose arguments you want, it all comes out like "I don't want to pay for all the blacks on welfare!" There were people like you once, they thought they had science behind them. Our science beat their science because it was centered around the principle of killing self-important fascists.
The "What do you think you're doing in my neighborhood, white boy?" guy:
Hey fuck you buddy, I live here too!
The "Chingy-chong chang, this is how Asians talk." guy.
Seriously, if I have to tell you what's wrong with making that kind of hacky-ass joke, you need to stop watching old Mickey Rooney clips. It was already old when he did it, and that was about fifty years ago. Stick to knock-knock jokes and your Jeff Foxworthy fan club.

I could go on and on, but let's leave it here for now. Suffice it to say, you want to speak like trash? Fine, go sit in a garbage can. I don't need to hear it, I've heard enough.