The Gujar community in India are classified by the government as OBCs, or Other Backward Class.
But the Gujjars want to be relegated to one of the lowest castes so they can gain access to better jobs and education.
While the Hindu caste system has been officially abolished in India, it remains a powerful influence.
Sir David is joined by Sachin Pilot, Member of Parliament for the town of Dausa where 20 Gujjars have already been killed.
Pilot says that while violence has ceased, the situation is still precarious.
