While poverty has been diminishing in absolute terms and relative income has been growing on a global scale for over two centuries, inequality – as measured by instruments such as the Gini coefficient – has been increasing steadily since the early 1980s. With the financial crisis of 2007, the growing digitalisation of the economy and the current pandemic, global inequality has further worsened, seeing the fortunes of the superrich attaining unprecedented levels and revenue concentrating in the top percentiles of societies.

Concurrently to the aggravation of the social fracture, additional fault lines have been opening or hardening along logics of race, gender, ethnicity and religion. Identarian revendications and logics of difference and exclusion have come to complement, compete with or supersede more traditional struggles for equality in a postmodern and neoliberal context that has normalised inequality, homogenised societies and done away with earlier grand narratives and collective agendas. 

The consequences of inequality(ies) are dramatic, as reflected in the polarisation and fragmentation of societies, worsening health and mortality indicators, political tensions and violence, a decline in democracy, and mistrust in state institutions. The objective of the current issue of Global Challenges is therefore – by reverting to the analytical tools of social science – to reflect on the causes behind the multifaceted growth of inequality(ies), anticipate their noxious fallouts and explore potential remedies.

The essays in this volume are the product of a new 'research practicum' course in the Department of Political Science and International Relations at the Graduate Institute in Geneva. They build on the debates on 'Urban Morphology and violence' to reflect on the associations between cities - their political orders and disorders - and outcomes ranging from occupation and resistance to marginalisation and containment. These texts foreshadow the possibility of centring - and challenging - the urban in our understanding of contemporary conflict, violence and peace. They are a first step in opening up a research agenda for a more textured analysis of spatial, geographical and temporal dynamics within the city in relation to violence, and, therefore, the mobilisation of spatial, temporal and visual modes of analysis. The promise is to make visible the varied roles of urban morphologies - adding to the debate on cities in and as sites of conflict.