Terrible chart. There is no scale or legend to map color to "tax burden." Tax burden is not specifically defined anywhere (Overall tax rates? Absolute taxes pai

Terrible chart. There is no scale or legend to map color to "tax burden." Tax burden is not specifically defined anywhere (Overall tax rates? Absolute taxes paid? Taxes paid as fraction of total wealth?), so the chart is basically meaningless besides as a sensationalist tool to advance the author's political stance. Another problem is that naturally one would perceive time as the independent axis (usually horizontal/X) while the various tax burdens are a function of that time. I don't mean to diminish the author's point or disagree with his belief, but this chart does little service for the author.