Introduction
This chapter serves as an overview of the book and orients readers to subsequent chapters. It provides major contexts for networked collective actions and offers a quick look at the emergence of nontraditional intermediaries and their dynamic interactions with traditional intermediaries. Then the chapter introduces South Korean citizens’ candlelight vigils in 2016 and 2017 calling for the impeachment of President Park Geun-hye and discusses how the impeachment example is an instance of the complex changes being observed in collective actions facilitated by digital communication technologies. The chapter briefly explains theoretical and methodological approaches used in this book in analyzing the intricate relationships between various agents (e.g., individuals, institutions, bots/algorithms) and their interactions with relevant affordances during South Korean citizens’ candlelight vigils demanding Park’s impeachment. The chapter ends with a brief summary of the focus of subsequent chapters.