This report, edited by Nell Abernathy, Mike Konczal, and Kathryn Milani, builds on recent analysis of economic inequality and on our 2015 report, Rewriting the Rules, in which we argued that changes to the rules of trade, corporate governance, tax policy, monetary policy, and financial regulations are key drivers of growing inequality. Where Rewriting identified the problem and began to outline a policy response, Untamed delves deeper on a specific set of solutions to curb rising economic inequality and spur productive growth. We start from the assumption that inequality is not inevitable: It is a choice, and, contrary to many opinions on both the left and the right, we can choose differently without sacrificing economic efficiency.