Here you can find a short video-documentary of our Polis 21 project, examining questions of migration and urban exclusion in Athens, Belgrade, and Zagreb. The project Polis 21 / Locus Solus, organised by European Alternatives, Out of the Box, and numerous other partners and with the support of the European Cultural Foundation, asked about the boundaries of the city in Europe in the 21st century. If we have the impression that forms of exclusion and alienation are not only present in our societies but growing in complex, subtle and interlinked fashions which often escape our habitual political categories, looking at the public space in situated contexts, and asking such apparently simple questions as ‘who does it belong to?’ and ‘who is welcome in it?’ are ways of returning to the root of politics and getting a vision over its contemporary concrete manifestations. (text continues under the video) The four cities in which the project took place – London, Athens, Belgrade and Zagreb – are strikingly different in the answers that can be given to these questions.In the former Yugoslavia the evolution of ‘socially owned property’ over the years following the breakup of the federation poses a challenge to the analytical models of the meanings of ‘neoliberalism’, ‘privatisation’ and ‘gentrification’ as they are understood in the western parts of Europe. Socially owned property was neither owned by individuals nor by the state, but by the society itself, and what has followed the breakup of this institution via the purchase of land can neither be understood as theft nor as strict privatisation, but is perhaps best understood by the metaphor of a cancer that infects the body politic itself. Discussions as part of the Polis 21 project in Belgrade and Zagreb focussed on understanding this phenomenon from critical and artistic perspectives.In Athens the project looked specifically at the neighbourhood of Psirri-kerameikos-metaxourgio, once the setting of an ongoing gentrification process that became a no-go area after migrants settled there. The categories of philoxenia and xenophobia were interrogated critically by means of situated research in the neighbourhood itself, in a conference at the Byzantine museum (a suitable public place to challenge the dominant discourses of identity at its core), and by artistic interventions in public space itself. European Alternatives is pleased to have organised this series of events and artistic interventions as a first attempt to forge the necessary networks of artistic activism that make transnational interventions possible.