Book excerpt: The world has changed dramatically since the emergence of post-Marxism, and a reassessment is needed to determine its significance in the modern world. First published as a special issue of Global Discourse, this book explores the theoretical position of post-Marxism and investigates its significance in recent global political developments such as Brexit, Trump and the rise of the far right. With valuable insights from international contributors across a range of disciplines, the book puts forward a strong case for the continuing relevance of post-Marxism and, particularly, for Ernesto Laclau and Chantal Mouffe’s theory of radical democracy.