I agree. We should be able to discuss this in a purely and clinically analytical manner.
It looks to be a poisonous culture, from here. There is a reason why you see Indian, Jewish, and Asian kids not behave this way; their culture emphasizes respect, education and striving to succeed. It's a stark contrast to what you see in today's black culture. (or, this particular sub-culture, at least)
Thuggish behavior being promoted in lieu of fathers discipline and guidance, a disdain for education (acting "white") and a huge lack of respect for others.. You don't really see this phenomena really happen in any other group, not at this level. So, the question becomes: where is the differentiating factor(s)?
One thing's for certain, continuing to sweep it under the rug of excuses isn't doing any good.