What causes climate change, social breakdown, rampant inequality and the creeping spread of ubiquitous surveillance? Capitalism. What is the only alternative to capitalism? Socialism. Socialism cannot, however, remain static if it is going to save civilisation from these catastrophes. In this urgent manifesto for a 21st century left, Jeremy Gilbert shows that we need a revitalised socialist politics that learns from the past to adapt to contemporary challenges. He argues that socialism must...