This book explores to what extent constitutional principles are put under strain in the social media environment, and how constitutional safeguards can be established for the actors and processes that govern this world: in other words, how to constitutionalise social media.

Millions of individuals around the world use social media to exercise a broad range of fundamental rights. However, the governance of online platforms may pose significant threats to our constitutional guarantees. The chapters in this book bring together a multi-disciplinary group of experts from law, political science, and communication studies to examine the challenges of constitutionalising what today can be considered the modern public square.

The book analyses the ways in which online platforms exercise a sovereign authority within their digital realms, and sheds light on the ambiguous relationship between social media platforms and state regulators. The chapters critically examine multiple methods of constitutionalising social media, arguing that the constitutional response to the global challenges generated by social media is necessarily plural and multilevel. All topics are presented in an accessible way, appealing to scholars and students in the fields of law, political science and communication studies.

The book is an essential guide to understanding how to preserve constitutional safeguards in the social media environment.

Constitutionalising Social Media is a valuable contribution to the scholarship on fundamental rights in our increasingly networked world. This book is part of a rapidly growing research field, as demonstrated by the establishment of the Digital Constitutionalism Network in 2019 and recent related publications. * Canadian Law Library Review *

Edoardo Celeste is Associate Professor in Law, Technology and Innovation at the School of Law and Government of Dublin City University, Ireland.
Amélie Heldt is Associated Researcher at the Leibniz Institute for Media Research (Hans-Bredow-Institut), Germany.
Clara Iglesias Keller is Researcher at the WZB Berlin Social Science Centre, Germany, and Associate Researcher at the Alexander von Humboldt Institute for Internet and Society (Berlin), Germany.