From the United States to the United Kingdom and from China to India, growing inequality has led to social discontent and the emergence of populist parties, also contributing to economic crises. We urgently need a better understanding of the roots and costs of growing income gaps. The Costs of Inequality draws on the experience of Latin America, one of the most unequal regions of the world, using historical examples from different countries to demonstrate how inequality has hampered economic growth and contributed to a lack of good jobs.