Memorialisation

How do we remember the dead and why does it matter? Mike Williams considers the promise of so many nations never to forget the death and suffering of World War One, and explores how the dead have been remembered around the world and through the ages.Produced by Ben CrightonImage: Ceramic poppies covered in rainwater at the Blood Swept Lands and Seas of Red evolving art installation at the Tower of London Credit: Chris Jackson/PA Wire