We propose a theory of protest dynamics with heterogeneous protest technology and intensity. The ability to mobilize online reduces the likelihood of coordination failures at both the extensive (engagement) and intensive (violence) margins. Social media can initially help launch massive...

This cumulative dissertation investigates transnational solidarity in times of crises in the context of the European Union (EU). In order to realize solidarity policies that are democratically legitimate, the EU requires the support of its population. To that end, the dissertation at hand takes...