" The report suggests that the growing income inequality has, over the past two decades, cost the U.S. between 6 and 7 percentage points in economic growth"
The article presents both sides of the question, but leans toward the more liberal answer. It says that the gap in income between the rich and the poor is a major factor in economic unrest. It claims that if more money and educational opportunities were presented to the poor, we would have a better functioning economic system.
"Among older children, evidence suggests that the gap between high- and low-income primary and secondary-school students has increased by almost 40 percent over the past thirty years."
This article states that the Haves are born with similar intelligence but receive wildly unequal opportunities in schools. It explains how students with little family income go from being as equally favored as their richer counterparts to being favored far less than them. It demonstrates, seemingly beyond reasonable doubt, that the Haves are much more advantaged than their Have-not classmates