A new documentary from Pakistani-American director Mohamed Ali Naqvi explores the politics behind Pakistan’s controversial blasphemy laws. The film follows conservative cleric Khadim Hussain Rizvi and examines the cases of those accused of disrespecting Islam, including Asia Bibi, the Christian woman who spent almost 10 years on death row.

This week Agnes and Ben meet with Mohamed to discuss the making of the film and also consider how documentary films can drive political change.