What are protesters backing 'Reservation Hatao Andolan' demanding?

Hundreds of people backing the 'Reservation Hatao Andolan' are protesting at Jantar Mantar, demanding that affirmative action be based on economic criteria rather than caste. They also want a review of the existing reservation system, arguing that its benefits didn't always reach the most disadvantaged sections. Some are demanding the introduction of the "creamy-layer" criterion.