What undermines solidarity? Four approaches and their implications for contemporary political theory

Solidarity is crucial for realizing justice, securing public goods, and reducing domination. Yet there have been few theoretical studies of its threats and vulnerabilities. In this paper I fill this lacuna, outlining four approaches to what undermines solidarity and considering their implications for contemporary political theory. I begin by reviewing the empirical literature on solidarity, noting that its focus on diversity and individuation has yielded inconclusive results. I then develop four alternative threats to solidarity by drawing from the history of political thought, social theory, and religious studies: interpersonal dependence (Jean-Jacques Rousseau); radical evil (Immanuel Kant); self-dissolution (Émile Durkheim); and moral spectatorship (Emmanuel Levinas). Taking these threats into account, I conclude, should significantly impact our normative theorizing about solidarity. In particular, it should encourage a research agenda that attends to solidarity’s affective, esthetic, and non-rational sources.