Mars Uncovered: Ancient God of War

Classicist Bettany Hughes investigates the enduring relationship between violence and worship by following the trail, through time, of the ancient god of war: Mars.

In this BBC history documentary, Bettany asks if celebrating war is a way of bringing societies together by creating 'them' and 'us' and how Romans, and later Christian crusaders, justified bloodshed.

But can war ever be justified?