Jonathan Freedland and guests compare the Facebook Cambridge Analytica data row with Luther's rejection of Purgatory and a loss of trust in the Church in pre-Reformation Europe.

With Diarmaid MacCulloch. Professor of the History of the Church; Mic Wright, technology writer; Emily Taylor, associate fellow of Chatham House and editor of the Journal of Cyber Policy; Liam Byrne MP, Shadow Digital Minister and actor Anton Lesser.

Producer: Georgia Catt.