1. Introduction; Shakuntala Banaji.- 2. Motivations for active citizenship in youth organisations in the Italian context; Antonella Guarino, Elvira Cicognani and Bruna Zani.- 3. Youth organisations as a developmental context: A developmental psychological perspective; Clara Mikolajczyk, Katharina Eckstein and Peter Noack.- 4. Between emotion and reason: The role of affective networks and events in sustaining the daily experience of environmental activism; Joana P. Cruz, Carla Malafaia, José Eduardo Silva and Isabel Menezes.- 5. Preaching to the choir: Patterns of non/diversity in youth citizenship movements; Sam Mejias and Shakuntala Banaji.- 6. When Facebook is (not) enough: Hybridity in the media and political strategies of leftist youth organisations; Alena Mackova, Sam Mejias and Jakub Macek.- 7. The cost of intensive civic participation: Young activists on the edge of burnout; Mai Beilmann.- 8. Conclusion: Rhetorics and Realities of Active Young Citizens Across the European Union; Shakuntala Banaji.