Leonard Schneider made a successful career out of pointing out the contradictions in the use of our language. Schneider, who was white, often used the "N-word" in his stage act, and made people laugh while doing so. One of his routines was called "Any [N-word] here tonight?"
You know Schneider as Lenny Bruce.
By repeating forbidden words over and over again, Bruce believed that their power to hurt would disappear. Unfortunately, he did not live long enough to give his theory a full test.
I doubt that Dr. Laura Schlessinger was channeling Bruce when she uttered the "N-word" on the air 11 times to one caller last week. In the context of the call, she was trying to make a point about the uneven use of the N-word and how it was acceptable in one context but not in another.