Professor Alan Ford examines the origins of sectarianism in Ireland seeing it as an interesting example of how religions relate to identity and how that can easily mutate into extremist and fundamentalist ideologies.
Other videos by Alan Ford you wish to watch include;
Why Study Irish Church History with Alan Ford https://www.youtube.com/watch?v=bmT7jtcfKuI
Theologians in Conversation; James Ussher: Creation of Reputation https://www.youtube.com/watch?v=sq-8TJRpYjA
Theologians in Conversation: Is Religion Divisive https://www.youtube.com/watch?v=RvDKxtHI5bY
Theologians in Conversation: Celtic Christianity: Myth and Reality https://www.youtube.com/watch?v=xlh6yirUcPo