As far as I'm concerned, Lenny Bruce had it right. He told jokes which were superficially at everyone's expense, but he did it not to denigrate anyone but to make people more aware of the games they're constantly playing on one another...and inside their own minds.

And a bunch of uncomprehending cops kept arresting him for doing so! (thus enforcing the political correctness of their time, which could be summed up in the phrase "Don't think about this or try to understand it...don't think about anything...just react!")