Increasing economic inequality in cities, and the spatial translation of that into more segregated neighbourhoods, is top of the political agenda in developed countries. While the overall living standards have increased in the last century, the focus has now shifted from poverty to economic differences, with a particular focus on the gap between the very poor and the (ultra-)rich.

The authors observe a common view among policy-makers and researchers alike: that urban-economic inequality and segregation are increasing; that this increase is bad; and that money and people (in the case...