Naked Capitalism has published the article The Mega Rich Are Getting Mega Richer: A Former CEO Exposes the Corruption Behind Their Obscene Paychecks.

… between 1980 and 2014 the average real income of the Mega Rich has nearly quadrupled, increasing by 381 percent. Over the same period, the Merely Rich doubled their income while the bottom 90 percent lost ground, suffering a 3 percent decline.

This statistic is well known. One of the great features of this article is the answer to the Laffer curve that the mega rich use to convince people that their prescriptions for tax cuts for the wealthy are good for the economy. I am too lazy to reproduce the graph and the explanation here. You’ll just have to read the article if you want to know how to counter the Laffer curve. (I always thought this was misspelled. It should be the laugher curve.)