To most people the word fundamentalism conjures up images of terrorism.
This documentary tells how this phenomenon, with its complex history, is rife in many of the world's religions and how its intention is to impose a single truth on a plural world.
Mark Dowd travels across the world to trace the origins of fundamentalism and find out how it developed into the global phenomenon it is today.
He discovers fundamentalists of all religious persuasions across the world – Christians, Hindus, Jews, Muslims and, unexpectedly, Buddhists...
Watch the full documentary now (playlist)