One could conduct a survey of 100 randomly selected people of each ethnic group and ask only 1 question; "Have you ever used a racial slur in conversation". If they're honest people, I'd wager that no less than 3/4 of them reply "Yes".
Honky, cracker, kike, black (yeah, I said it. You wanna fight about it?), wop, gook, chink, kraut, wet back, rag head; almost everyone has at one time or another used one of these words. When you break the sample group down to people in her age group, I'll bet the number of people replying in the affirmative increases to damn near 100%. Anyone that has told a really funny joke, quoted Richard Pryor, or attended a X Gate is guilty. As a people, we've become too thin skinned.
The thing that truly sunk her in this case, in my opinion, was the "alleged" Old South party she hosted where she (allegedly) made the black folk dress as slaves. She should have had better sense than that. Burn her for that, not for something she said that everybody else says.