Prof Nigel Biggar is an historian and moral theologian. His research into the ethics of empires led to an online campaign to boycott his work, with Oxford University lobbied to shut his work down. Nigel gently explains the nature of the criticism and explains why it is so important that we engage in rational discussion about our past. In a time when authoritarian regimes are challenging the world order, it is vital that the West has a renewed appreciation of its own values that we so easily take for granted.