Introduction : radical democracy and collective movements today : responding to the challenges of kairos / Alexandros Kioupkiolis and Giorgos Katsambekis -- Post-hegemony : politics outside the usual post-Marxist paradigm / Benjamin Arditi -- Letter to a Greek anarchist : on multitudes, peoples, and new empires / Richard JF Day and Nick Montgomery -- Sovereignty of the people / Jodi Dean -- Occupy and autonomous political life / Saul Newman -- Hegemony or post-hegemony? : discourse, representation and the revenge(s) of the real / Yannis Stavrakakis -- Generalised antagonism and political ontology in the debate between Laclau and Negri / Paul Rekret -- A hegemony of the multitude : muddling the lines / Alexandros Kioupkiolis -- The multitudinous moment(s) of the people : democratic agency disrupting established binarisms / Giorgos Katsambekis -- Representation and political space in Laclau and Hardt and Negri / Andy Knott -- Autonomy and hegemony in the squares : the 2011 protests in Greece and Spain / Marina Prentoulis and Lasse Thomassen.