Is India’s caste system a discriminatory and divisive anachronism that’s had its day, or does it provide stability and order in a complex society with its roots in ancient traditions, asks BBC World Service? Members of the low-caste Dalit community – once known as ‘untouchables’ – are marching in the state of Gujarat following a spate of recent attacks against them. They say they’ll boycott their designated tasks within the caste system, which include the manual cleaning of sewers and the disposal of dead animals. Dr Prakash Shah, Reader in Culture and Law at Queen Mary University of London (QMUL), joins the discussion.