Does crossing a moral line justify collective means? Explaining how a perceived moral violation triggers normative and nonnormative forms of collective action

In three studies conducted in the United States, we examined whether a perceived moral violation motivates willingness to engage in normative and more radical collective action. Using value‐protection and identity‐formation models, we explored whether increased endorsement of moral convictions and relevant opinion‐based group identification could explain such effects. Study 1, using the “travel ban” for Muslims as the focal issue, experimentally...