In this highly topical introduction, Professor Raymond Wacks explains and evaluates the leading theories of justice that have shaped our societies and their legislative and judicial systems, and explores the extent to which fundamental notions like fairness, equality and freedom are reflected in contemporary society. By analysing some of the world's most pressing challenges, including terrorism, corruption and migration, Justice: A Beginner's Guide shows how these ideas are applied in practice - and how far we still have to go to achieve social justice.