The empirical-historical analysis of the top incomes and their wealth are in the center with Thomas Piketty's "Capital" (2014). The share of the top 10% was never below 60% from 1917 to 2012. A wealth tax is vital to reverse the exploding inequality.
A Frenchman Admonishes Americans to Equality (tags)
With his book and the data, Thomas Piketty has shaken the self-understanding of American society.. In 2010 the richest one percent had around 20 percent of the total income. In the 1970s the share was under 10 percent.