This paper analyzes the relations between public space, language, and democracy. It describes how dissensus, democratic citizenship, domination, and political speech are linked together in contemporary French political philosophy, referring in particular to Jacques Rancière, Miguel Abensour, Alain Badiou and Claude Lefort. Hannah Arendt's political thought represents a theoretical frame or reference for most of these authors, who relate to her work in different, and often discrepant, ways.