I think this is more of an environmental influence rather than genetic. Sure some can state that blacks are resorting to a more primative state of mind but this may only be caused by the way they were raised. One can also take the position that since blacks were oppressed for so long, it caused them to keep this "only the strong survive" mentality. With little to no way for them to succeed during slave times and segregation, one could accept the possibility that stealing was the only way to survive.
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For some reason, I believe in the slight possibility that blacks do hold some sort of dare I say primative gene in them. I'm not calling all blacks primative by any means, just that their environment seems to either oppress or influence this behavior. I would really love to hear a psychologists view on it.