The love of speech codes. Being polite is nice. Signing a speech code is troubling, no matter how well-intended the speech code may be. I try to think of the people who couldn't talk if they signed speech codes, and the quick answer is any comedian who followed Lenny Bruce, George Carlin, and Richard Pryor. The proper progression for free speech is more freedom, no matter how offensive you may find it. The fact that something offends people is the proof that offensive language communicates powerfully.
Moreover, for all that irony and parody are often missed by people who read quickly, they are necessary parts of any good writer's bag of tricks.
If you don't know what prompted this, I envy you.
P.S. For people who don't know that "NWA" is a compliment for anyone who's not bourgeois: the original N.W.A.