I am presenting research at the 9th Annual International Conference on Social Media and Society (#SMSociety) in Copenhagen, Denmark (July 18-20, 2018). Jill Hopke (DePaul University, United States) Molly Simis-Wilkinson (Independent Scholar, United States) Patricia Loew (Northwestern University, United States) Social Media in Agenda-setting: The Elsipogtog First Nation and Standing Rock Sioux Tribe ABSTRACT. The Dakota Access Pipeline did not gain widespread attention until it was nearly complete, despite extensive opposition from the Standing Rock Sioux Tribe. It was not until images depicting repression circulated on social media that mainstream media and public attention spiked. We use shale gas exploration in New Brunswick, Canada and the Dakota Access Pipeline, as case studies of social media agenda-setting. We consider disruptive public participation to involve constituents who perceive themselves as outsiders to decision-making. In both cases protest was ongoing for significant periods before receiving mainstream media and public attention. Using mixed methods, we show that law enforcement and company crackdown on indigenous communities, and the circulation of dramatic visuals via Twitter, is associated with spikes in social media, as well as media and public attention.