Various theories in social psychology have argued that perceived discrimination is a key antecedent of collective action (van Zomeren, Postmes, Spears, 2008; Smith, Pettigrew, Pippin, & Bialosiewicz, 2012). Most of this work, however, has focused on a linear relationship between discrimination and collective action. However, at very high (or low) levels of discrimination, people could feel demobilized because change is either not possible or does not feel urgent. We test this possibility, while taking into account both the perceived and institutional levels of discrimination (i.e., institutional stigma).