Works on the assumption that wealth inquality is a good thing when it isn't.
So let's break it down. The bottom 40% of the population controls less than 1% of the wealth in this country, and not surprisingly, they are not paying income taxes. They are, however, paying Social Security, Medicare, State income tax, Sales Taxes, and of course, higher taxes on Cigarettes, Liquor and other Plebian sins.
And of course, as consumers, they are paying the taxes passed down to them by those who provide goods and services.