No, you were not very clear about what you were looking for. All you originally said is that you were looking for "what would be considered a fair criticism of the effects hip hop has on larger black culture" - that could include alot of different things, including satire like the Boondocks. If you were specifically looking for "well-researched essays, articles, books, and so forth", you should've said so from the start.
------------------------------------------------------------ It's only natural, actual facts are thrown at you The impact'll blow trees back and crack statues Million dollar rap crews fold, check the sick shit Explicit, I crystalize the rhyme so you can sniff it