Ok u want to overcome castes.... show some balls and stop the reservations for the SC/ST.
U want to over caste system, herez ur start.
Every coin has 2 sides, if u wanna remove brahmins from the caste system, then u have to remove all the SC/ST and all their allies from the system.
Its easy to say remove caste system[aka remove brahmins/upper caste from system].
Today for this issue if 100 people are barking how hideous the caste system is, trust me the moment u talk out caste based reservations 1000 people will start ranting and supporting caste based reservation.