People do not typically want to affiliate with angry strangers; they often perceive strangers as antisocial if they are angry. But when would people want to affiliate with angry strangers? We tested whether perceivers detect potential alliances angry strangers if those strangers appear angry about behaviors perceivers believe are wrong. In an exploratory study (within-subjects, 80% power for dz = 0.17 and r = .17), perceivers first judged on wrongness a series of potentially immoral scenarios (neutral and Moral Foundations vignettes). Next, perceivers rated how much they wanted to affiliate (liking, enjoying interacting) with 24 target persons (half women) based only on those target persons’ emotional reactions (neutral, sad, or angry) to the same behaviors judged previously. The more wrong perceivers judged a behavior, the more they wanted to affiliate with target persons who reacted sadly or angrily to that behavior and the less they wanted to affiliate with target persons who reacted neutrally. Broadly, these data suggest people use anger or sadness as a coalitional cue when such emotions arise from perceived moral violations. -- Nick Michalak academic website <https://nmmichalak.github.io/nicholas_michalak/index.html>