http://www.economist.com/printedition/displayStory.cfm?Story_id=587251

Growing inequality is analogous to global warming. Its effects are diffuse and long-term, and there is always something more pressing to deal with. The question is how much more unequal world income distribution can become before the resulting political instabilities and flows of migrants reach the point of directly harming the well being of the citizens of the rich world and the stability of their states. Before that point is reached we should mobilize our governments, the multilateral organizations, and international NGO's to establish as an overarching priority a more equal world income distribution-and not just, as now, fewer people in poverty. (Au)