On the nonlinear link between stigma and collective action: Evidence from sexual and gender minorities in 25 countries - Selvanathan, Hema Preya; Valdenegro, Daniel; Noor, Masi; Visintin, Emilio Paolo; Lalot, Fanny; Sainz, Mario; Bilewicz, Michał; Hayward, Lydia; Sebben, Simone; Ullrich, Johannes; Hässler, Tabea; University of Zurich (Group Processes & Intergroup Relations, 2025)