In librarianship today, we encourage voices from our field to join conversations in other disciplines as well as in the broader culture. People who work in libraries and are sympathetic to, or directly involved in, social justice struggles have long embodied this idea, as they make use of their skills in the service of those causes. From movement archives to zine collections, international solidarity to public library programming, oral histories to email lists, prisons to protests - and beyond - this book is a look into the projects and pursuits of activist librarianship in the early 21st century.