In the 1930s, many parts of Britain were suffering the effects of the Great Depression. But conditions were particularly harsh in the town of Jarrow, in the north-east of England. In 1936, two hundred men marched the 300 miles from Jarrow to London to protest against mass unemployment and to demand that new industries be established in their town. They called it the Jarrow Crusade. Witness delves into the BBC archives to hear the voices of the marchers. (Photo: Marchers on the Jarrow Crusade. Credit: Keystone/Getty Images)