Artificial intelligence (AI) has fundamentally transformed online discourse, serving simultaneously as a source of and a potential solution to threats to democracy. This article conceptually examines AI’s multifaceted role in digital public spheres, beginning with an analysis of how AI shapes democratic processes online, ranging from information curation and political participation to dialogue facilitation and the construction of epistemic infrastructures. We identify several key risks: AI amplifies harmful content through automated content generation, coordinated manipulation, and the algorithmic mainstreaming of borderline content that often evades traditional detection systems. Within this broader democratic context, we position counter speech as a critical intervention strategy and examine both reactive measures (e.g., automated detection and content moderation) and proactive approaches (e.g., prebunking, algorithmic downranking, friction design, and AI-mediated dialogue). We argue that effective counter speech increasingly relies on human–AI collaboration, where AI supports human counter speakers with factual resources, emotional scaffolding, and scalability, while human actors preserve the authenticity and agency that make counter speech normatively meaningful. However, realizing the potential of such collaboration requires moving beyond technological fixes toward democratically legitimated governance structures. Drawing on examples from Wikipedia and decentralized platforms, we demonstrate how transparent and participatory institutional arrangements can foster more resilient discourse environments. We conclude that societies can harness AI’s democratic potential while mitigating its risks only by proactively establishing legitimate deliberative processes grounded in broadly shared discourse norms.

Rieger, D. & Haim, M. (2026). Threat and Remedy: AI's Technological and Normative Role in Democratic Discourse and Counter Speech. Media and Communication, 14, 1-19. https://doi.org/10.17645/mac.12499 (content_copy)