What is the point of solidarity?

In response to activist movements like Black Lives Matter and global events such as the Covid-19 pandemic, philosophers have shown a renewed interest in the value and practice of solidarity. However, this surge of interest has also highlighted some notable disagreements in the literature. This article proposes a novel understanding of the practice of solidarity and its value. On this approach, solidarity is characterized functionally as the practice that offers a unique way of bringing into greater harmony our moral and our personal reasons. Under social conditions of pervasive injustice, we often face a conflict between pursuing a flourishing life—e.g., by investing time and energy in personal projects and relationships—and doing what is morally required. I suggest that through solidarity commitments, we align our need to advance morality-given causes with our need to pursue personal projects and relationships. Viewing solidarity through the lens of this ‘positive alignment’ idea allows us to better understand its unique characteristics. Moreover, the account can clarify (and potentially resolve) some disagreements that have besieged recent debates. Finally, this approach deepens our grasp of solidarity’s value and its deontic status, contributing to its recognition as a central ideal in moral and political theory.