you are ignorant in this regard sir. A LOT has happened for the people trapped in the lower ends of the caste system. just read the forums, you will see enormous anger from the other indians regarding the outrageous reservations these people get in education and job sectors. the reason for this is simple. Lower castes and untouchables have a high birthrate, throughout history 80% of their children have died due to various reasons keeping their net population under control. since the 60s however, they had access to more nutrition and medicine resulting in a massive rise in india's population. being the majority in a democratic country, they now run india indirectly. so politicians give them massive reservations and opportunities to get more votes.
people keep saying how the lower castes and untouchables live a life of misery in india. but compared to the lives they had the last 3000 years, they are living the dream