Income inequality grew significantly in 2005, with the top 1 percent of Americans -- those with incomes that year of more than $348,000 -- receiving their largest share of national income since 1928, analysis of newly released tax data shows.
The top 10 percent, roughly those earning more than $100,000, also reached a level of income share not seen since before the Depression. ...
The new data also shows that the top 300,000 Americans collectively enjoyed almost as much income as the bottom 150 million Americans. Per person, the top group received 440 times as much as the average person in the bottom half earned, nearly doubling the gap from 1980.
The disparities may be even greater for another reason. The Internal Revenue Service estimates that it is able to accurately tax 99 percent of wage income but that it captures only about 70 percent of business and investment income, most of which flows to upper-income individuals, because not everybody accurately reports such figures.
Apropos of nothing, I found this on YouTube.