More fun with numbers. Just as an observation, numbers can be organized to support about any argument you want them to. To wit:
"In 1958, the top 3% of taxpayers earned 14.7% of all adjusted gross income and paid 29.2% of all federal income taxes. In 2010, the top 3% earned 27.2% of adjusted gross income and their share of all federal taxes rose proportionally, to 51%."
"In contrast, the share of taxes paid by the bottom two-thirds of taxpayers has fallen dramatically over the same period. In 1958, these Americans accounted for 41.3% of adjusted gross income and paid 29% of all federal taxes. By 2010, their share of adjusted gross income had fallen to 22.5%. But their share of taxes paid fell far more dramatically—to 6.7%. The 77% decline represents the single biggest difference in the way the tax burden is shared in this country since the late 1950s."
Full essay is here. For the record: I paid no income taxes in 1958.