The Revolutionary Optimists (2013)

Children are saving lives in the slums of Kolkata. Amlan Ganguly doesn't rescue slum children; he empowers them to become change agents, battling poverty and transforming their neighborhoods with dramatic results. Filmed over the course of three years, The Revolutionary Optimists follows Amlan and three of the children he works with on an intimate journey through adolescence, as they challenge the idea that marginalization is written into their destiny.

Unfortunately the movie The Revolutionary Optimists is not yet available on HBO Max.