ABSTRACT The paper examines the role of shame as a motivator to engage in social struggles. The author first introduces a distinction between social and moral shame arguing that, while the former can lead to a passive submission to injustice, the latter usually works as a motivating force to resist it. He subsequently discusses three cases of injustice, in which the subject is respectively the victim, the actor, and the witness. The main thesis of the paper is that in all (...) three cases the subject may feel moral shame for tolerating injustice and therefore be motivated to resist it. The conditions under which moral shame arises are discussed, while the absence of moral shame is attributed, through reference to clinical studies, to psychic defence mechanisms, such as negation and rationalisation, which allow the subject to tolerate injustice when it would be too costly to fight it. Throughout the paper, the author engages in a discussion of Honneth’s theory of social struggles, reassessing the role of recognition within the moral grammar of social struggles while attributing the due importance to the desire to live up to one’s self-ideal. (shrink)