Blacks also have their income divide. There are the music and entainment industries, professional athletes and unfortunately pimps and drug dealers.
If you think the professional athletes get there because they have a 'secret hand signal' you're nuts. With the odds against ever making a dime doing it, they work harder than anyone I know of, just for the chance to make the money and fame.
Conclusion, poverty has nothing to do with race, attitude is the guiding factor.