Two experiments tested the hypothesis that perceptions of the legitimacy of discrimination moderate the extent to which targets respond to pervasive discrimination with commitment to their ingroup. Both the perceived pervasiveness and legitimacy of discrimination directed toward the ingroup were manipulated among group members of a stigmatized group: People with body piercings. Generalizing previous research findings to this non-typical stigmatized group, perceiving discrimination as pervasive and legitimate affected group commitment. On a number of group commitment indicators, we found that pervasive and legitimate discrimination lowered group identification (Experiment 1), outrage about the treatment received, and liking for a victimized ingroup member, but enhanced willingness to remove body-piercings in order to pass (Experiment 2) compared to legitimate and rare discrimination. Group commitment was relatively high when discrimination was appraised as illegitimate and was not affected by pervasiveness of discrimination. These results highlight that, for this non-typical stigmatized group, pervasive discrimination that is appraised as legitimate undermines group commitment.