In this introduction, we underline the theoretical connection between responsibility, luck, and equality upon which luck egalitarianism rests, and we consider the social and political relevance of the approach. We then situate Kasper Lippert-Rasmussen's version of the view as proposed in his book, Luck Egalitarianism, in the egalitarian landscape. Lastly, we introduce the six papers that make up this symposium: some are critiques from within or outside luck egalitarianism, while others engage with the theory by expanding the scope of luck egalitarianism.