I think I said that in my previous postings: because poverty in children is caused by poverty of their parents, and poor parents, being socially marginalised, are less likely to endow their children with 'social capital' (that is, manners, aspirations, credentials, social connections, etc.) required to gain access to the middle class status. I think that works for most societies, so I do not know why you mentioned "dark skinned kids" - certainly did not.
As far as "hoodlums and loosers" are concerned, I think you mention them out of the context I used these terms. I did not argue who is more or less likely to become a hoodlum or a looser. I argued that I do not like when a person who is a hoodlum or a looser, or someone who fancies him/herself to speak on behalf of such a person, tries to shift the responsibility on someone or something else. Deconstructing such shifting of responsibility used to be a progressive thing, e.g. in changing the way rape or domestic violence were treated in courts (the "she-made-me-do-it-your-honor" thing), no?
wojtek