Amid the flu pandemic of 1918, face masks came to mark the intersection between public policy and personal action. In the burgeoning Covid-19 epidemic a century later, masks are once again central symbols of tensions between collectivism, public health, science denial, and fatal notions of personal freedom in the United States. Drawing on case studies of mediated mask debates in Indiana, Ariel Ludwig, Jessica Brabble, and Tom Ewing trace the effects of contentious mask debates in 1918, demonstrating the importance of consistent enforcement and complementary measures in fighting deadly disease.