Recently social movement research has opened to the idea that emotions are important to collective action. Social movements challenge emotions, such as loyalty, gratitude, or love, that cement society, and reinforce the established institutions and relations of domination. They also redirect (empathy, anger, loyalty), weaken (fear, in-group animosities), convert (shame into anger), or intensify (anger with the opponent, in-group solidarity) the emotions of their members to sustain the momentum, help win over accidental onlookers, and deal with movement opponents. An entire spectrum of emotions in various constellations plays a role in social movement mobilization, internal dynamics, and demise. Of these solidarity, shame, anger, pride, and fear receive most attention.