In 1930, Gandhi led the famous Salt March against British rule in India. His great-grandson Tushar, retraced the route 75 years later.

Witness speaks to him about the power of peaceful protest. The programme also includes a newspaper account of the original march.

(Photo: 1930. Indian nationalist leader Mahatma Gandhi, and politician Mrs Sarojini Naidu, with a garland, during the Salt March protesting against the government monopoly on salt production.)