#2: Less income for the middle class
Partly as a result of lower pay, the middle class’s share of the nation’s total income has been falling. In 1980, the middle 60 percent of households accounted for 51.7 of the country’s income. By 2011, they were less than half. Meanwhile, the top fifth of households saw their slice of the national income grow 16 percent, to 51.1 percent from 44.1 percent.