If anyone is actually interested in the subject, William Labov's work may prove amusing. A list of his currently available work can be found at
http://www.ling.upenn.edu/~labov/papers.html
of which the most Ebonics-relevant is probably "Academic Ignorance and Black Intelligence",
http://www.TheAtlantic.com/atlantic/issues/95sep/ets/labo.htm
of which he says
This is a slightly abridged version of "The logic of
non-standard English," prepared for the Atlantic Monthly in
June 1972. It argued the case that AAVE was a fully formed
languge with all the capacity necessary for logical
thought, and that the conclusions of the "deficit model"
that black children had no language were based on
unscientific and biased methods. It is reprinted in the
electronic version of The Atlantic Unbound.
Labov's view figured in the Linguistic Society of America's resolution on the subject,
http://www.stanford.edu/~rickford/ebonics/LSAResolution.html
(and in many other places).
The Ebonics controversy was of some interest to me because of the vehemence and absolutism of those who denied that Black English Vernacular (as it's sometimes called) could be anything but a degenerate form of Standard English. In discussing it on Usenet, I received death threats for no more than soberly posting the URLs above and others like them, or reciting their contents, while in the mass media all sorts of lies and misconstructions were purveyed. It was all something like lifting a rock and finding an unsuspected scorpion beneath it. Or perhaps one did suspect.
In regard to "identity politics", an article appeared a few days ago in Salon Magazine about "Disability Studies" which I think shares a certain sensibility with the outragists of language -- that is, a sense that one belongs to not a master race but a master culture, and is rendered incredulous by the suggestion that one's worldview can be criticized or challenged. See:
http://www.salon.com/books/it/1999/08/18/disability/index.html
(My apologies for the author's use of the abominable diction of Warren G. Harding ("normalcy"). I have already derided the editors by email.)
Gordon