What are the consequences of European integration on social movements? Who are the "winners" and the "losers" of Europe's organized civil society? This book explores the Europeanization of contention through an in-depth, comparative analysis of French and German pro-asylum movements since the end of the 1990s. Through an examination of their networks, discourses, and collective actions, it shows that the groups composing these movements display different degrees and forms of Europeanization, reflected in different fields of protest. More generally, it shows the multiple strategies implemented by activists to Europeanize their scope of mobilization and by doing so participate in the construction of a European public sphere.