The Discourse of Opinion Leaders”: Opinion leaders can shape how people online discuss the topics and the issues that those celebrities care about by presenting a vision of the world and compelling evidence that their vision will benefit society. This chapter will focus on why opinion leaders focus on societal issues instead of promoting themselves. Examining the platforms and public events that opinion leaders use (like Twitter, YouTube, and TED Talks) will help us understand how they are authentic to what they believe without using manipulation to control their audience. Case studies of opinion leaders (like Greta Thunberg and Wangari Maathai) will help explain why they are influential representatives of their causes and how they shape the public discourse about the issues and topics they care about.