"There is no dispute that income inequality has been on the rise in the United States for the past four decades. The share of total income earned by the top 1 percent of families was less than 10 percent in the late 1970s but now exceeds 20 percent as of the end of 2012. A large portion of this increase is due to an upsurge in the labor incomes earned by senior company executives and successful entrepreneurs." This article helps to understand how and why income inequality is a problem and how its growing the the US.

"Income inequality in the United States has increased significantly since the 1970s after several decades of stability, meaning the share of the nation's income received by higher income households has increased. This trend is evident with income measured both before taxes (market income) as well as after taxes and transfer payments. Income inequality has fluctuated considerably since measurements began around 1915, moving in an arc between peaks in the 1920s and 2000s, with a 30-year period of relatively lower inequality between 1950-1980." This article outlines what income inequality is, and how it is impacting America.