Book excerpt: Thought-provoking and timely, this book addresses the increasingly widespread issue of online political hatred in Europe. Taking an interdisciplinary approach, it examines both the contributions of new technologies, in particular social networks, to the rise of this phenomenon, and the legal and political contexts in which it is taking place. Giovanni Ziccardi also evaluates possible remedies for the situation, including both legal and technological solutions, and outlines the potential for a unified European framework to counter the spread of hatred online.