“…In social protest contexts, the emotional experience of anger requires a relevant outgroup as its target, which is typically contextually available (Klandermans, 1997;Runciman, 1966;Solak, Jost, S€ umer, & Clore, 2012;Walker & Smith, 2002). Indeed, anger is an approach emotion (Carver & Harmon-Jones, 2009;Van Zomeren et al, 2012) that reflects the emotional experience of group-based unfairness that has been found to be predictive of collective action (Abrams & Grant, 2012;Shi et al, 2015;Smith, Pettigrew, Pippin, & Bialosiewicz, 2012;Solak et al, 2012;Tabri & Conway, 2011;Tausch et al, 2011;Van Zomeren, Spears, Fischer, & Leach, 2004;Zhou & Wang, 2012). Because social protest contexts often include a relevant outgroup that can be blamed for unfairness, it may not be surprising that outgroup-directed anger is such a prominent predictor in these contexts.…”