Abstract
This profile looks at the emergence of the 15M Movement in Spain. It analyses the role played by social networks in the movement's formation and identifies the grievances that mobilised a broad coalition of groups and individuals including dissatisfaction with the two-party political system, the venality of political and economic elites, widespread corruption, the economic crisis and the politics of austerity. The profile also looks at the action repertoire employed by the movement and its organisational structure. In terms of the former, it focuses attention on the role played by protest camps and assemblies in giving a voice to the excluded and building the bonds of solidarity necessary to sustain activists through protest. In terms of organisation, it describes a structure that is highly decentralised, has been influenced by protest movements in other parts of the world such as Latin America and has marked regional differences. It concludes with observations about what the 15M means for Spanish politics and the direction it might take in its struggle against the political and economic elites that have dominated Spain since the transition to democracy in the 1970s.