Do The Rich Pay Their Fair Share?

Will Wilkinson argues the rich "pay more than their fair share for the infrastructure of capitalism." One of his colleagues counters:

The fact of the matter is that the American tax code as a whole is almost perfectly flat. The bottom 20% of earners make 3% of the income and pay 2% of the taxes; the middle 20% make 11% and pay 10%; and the top 1% make 21% and pay 22%. Steve Forbes couldn’t have drawn it up any better.

Wilkinson goes another round.