The book is an alternative to the many dictionaries of politics that ignore or marginalize the history and influence of anti-capitalist theory and practice. Organized in an easily accessible format, it provides self-contained entries that introduce and explain concepts and issues that are important to the anti-capitalist movement. It demonstrates how the meaning and relevance of some of these have changed over time and illustrates a linkage between past and present activity that might be unfamiliar to people who are involved or interested in the current movement.