Summary: | Research in International Relations (IR) frequently confronts claims about the emotions shared by members of a group. While much attention has been devoted to the potential for affective and emotional experience beyond the individual level, IR scholars have said less about the politics of invoking popular emotion. This article addresses that gap. Specifically, we argue that between individual—and even shared—affective experience on the one hand and group-based “popular emotion” on the other exists not mechanisms of aggregation but rather processes of framing, projection, and propagation that are deeply political. We distinguish between two tropes that commonly structure references to popular emotion: communal emotion, the idealized attribution of an authentic, unifying emotional response of “the people,” and mass emotion, a volatile and potentially dangerous mob-like reaction, but one also susceptible to manipulation. Using the outbreak of World War I as a showcase, we demonstrate the political significance of popular emotion, including its enduring relevance for understanding contemporary populism. © 2019 International Society of Political Psychology
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