Abstract
Throughout the COVID-19 pandemic, Twitter has served as a leading public platform for sharing, receiving, and engaging with virus-related content. To protect users from misinformation, Twitter has enforced stricter content-vetting policies. This article positions Twitter as a politically motivated entity and briefly traces Twitter’s use and applications of the term “harmful content.” The author investigates how the platform’s broadening of its definition of harmful content illustrates Twitter’s strategy for combating misinformation by acting on kairotic moments in a way that is shaped by the diverse authoritative voices already guiding larger public COVID-19 discussions. The article concludes by examining the roles these observations can play in technical and professional communication classrooms.