The "Imaginary Hobgoblin" of Income Inequality

The charts above were prepared using Census Bureau data (Table E-2) on the Gini coefficients (a statistical measure of dispersion that quantifies income inequality on a range from 0% for complete equality to 100% for complete inequality where one person receives all of the income) for full-time, year-round workers.  Like other measures of income inequality for families and households over time presented recently here, income inequality for full-time , year-round workers follows the same pattern: 

The Gini coefficient for full-time workers increased gradually through the 1960s, 1970, 1980s, and then stabilized in the mid-1990s (after rising from 34% in 1967 to 39.5% in 1994, see top chart) and hasn't changed at all in the sixteen-year period from 1994 (39.5%) to 2010 (39.7%).  

Bottom Line: Whether we look at Census Bureau data on Gini coefficients for U.S. households, families, or year-round workers, or look at the share of income going to the top fifth of Americans, there is absolutely no statistical support for the commonly held view that income inequality has been rising recently.  So why are we even having this national debate about solutions to the "non-problem" of rising income inequality.  Is this another "imaginary hobgoblin" (see below)?

H.L. Mencken: "The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary."