Can citizens impact the broader discourse about an organization and its legitimacy? While social media have empowered citizens to publicly question firms through large volumes of online evaluations, the high heterogeneity of their evaluations dilutes their impact. Our empirical study applying a threshold vector autoregressive model (TVAR) analysis of 2.5 million tweets and 1,786 news media articles tests the condition by which the heterogeneity of online evaluations converges and influences the broader media discourse. Although social media evaluations do not initially influence media legitimacy, they become influential after reaching a tipping point of refracted attention, which is created by high volume and convergence of individual evaluations around few aggregative frames. Thus, social media storms may influence the broader discourse about an organization when this discourse converges and reaches a tipping point, rather than merely through the massive participation of citizens.

公民能否影响关于组织及其合法性的更广泛的讨论？虽然社交媒体使公民能够通过大量在线评估公开质疑公司，但他们评估的高度异质性削弱了它们的影响。我们对 250 万条推文和 1,786 篇新闻媒体文章应用阈值向量自回归模型 (TVAR) 分析的实证研究测试了在线评估的异质性收敛并影响更广泛的媒体话语的条件。尽管社交媒体评估最初不会影响媒体的合法性，但它们在达到折射注意力的临界点后变得有影响力，这是由围绕少数聚合框架的个人评估的大量和收敛造成的。因此，