...Janina Seutter; Michelle Müller; Stefanie Müller; Dennis Kundisch Purpose Whenever social injustice tackled by social movements receives heightened media attention, charitable crowdfunding platforms offer an opportunity to proactively advocate for equality by donating money to affected people...

... collective efficacy, but there was a curvilinear relationship between the group size and perceived self-efficacy. Self-efficacy partially mediated the relationship between group size and intentions to participate; collective efficacy did not. Originality/value The study contributes to social movement...