Since the 1980s, US administrations have also geared the tax system to the advantage of the better off. Taxes on unearned income, such as shares and inheritance, fell sharply and are much lower than taxes on pay.
Yes that would explain why a particular section of society aren't earning/retaining any money (face-palm).
Dear Guardian, what percentage of poor blacks pay taxes of any kind? Conversely, what percentage of poor blacks are net recipients of tax money?
And, what percentage of minorities always vote for property tax increases.