Inequalities of all kinds - income, sex, age, disability, sexual orientation, race, class, ethnicity, religion and opportunity - continue to persist across the world, within and among countries. Inequality threatens long-term social and economic development, harms poverty reduction and destroys people’s sense of self-worth. This, in turn, can breed crime, disease and environmental degradation. Despite progress in some areas, too much of the world’s wealth is held by a very small group of people. We cannot achieve sustainable development and make the planet better for all if people are excluded from the chance for a better life.