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In Echo Chambers and Epistemological Bubbles: Communicative Flirtations with the End of Democracy, Lauren Zentz offers a critical linguistic ethnographic examination of moral-political discourse on social media following the January 6, 2021, US Capitol insurrection. Moving beyond the oft-used "echo chamber" hypothesis, Zentz proposes that contemporary digital political communication is better understood as ideological "trench warfare," where routine exposure to opposing viewpoints fuels retrenchment and out-group delegitimization rather than open-minded democratic deliberation.

Focusing on the Twitter practices of prominent "left-leaning" American political influencers, this monograph operationalizes a "sociolinguistics of morality". Through detailed micro-analyses of stance, deictics, deontics, underspecification, mockery, and chronotopic scaling, Zentz demonstrates how these actors discursively construct and defend an Enlightenment-based, scientistic, and inclusive democratic episteme against contemporary US far-right metapolitical movements. The book concludes with an argument that the traditional "left versus right" American binary is no longer analytically viable; instead, the United States faces a profound epistemological rupture pitting liberal democratic norms against anti-democratic authoritarianism.

This timely volume provides crucial theoretical frameworks for researchers in sociolinguistics, linguistic anthropology, political communication studies and more, for graduate students and researchers seeking to understand the sociolinguistic architectures of modern democratic crises