Presenting new empirical research and adopting a cross-disciplinary and comparative perspective, this book offers an analysis of the rise and failure of mobilisations against same-sex marriage in western Europe, Focusing on the UK, Ireland, France and Italy, it sheds new light on the outbreak of new social movements in defence of religious cultural norms and the renewed role of religion in western European countries, thus contributing to our understanding of the changing dynamics of the secularisation process. As such, it will appeal to scholars and students of the sociology of religion, public policy analysis and new social movements.