Water: child brides.
Unfortunately, both child marriage and hatred of widows still takes place, in India and elsewhere. These are deeply rooted things and seem to create a tremendous amount of suffering. Numerous laws have been passed banning these practices in various countries, but in rural areas the laws are often ignored.
I knew intellectually about these things before, but the movie really brought home the reality of what it might be like to be considered a widow in such a culture, even as a young child. It was incredibly sad. It boggles my sheltered and privileged mind to know that this sort of thing is still going on.
The picture above is of the main character, a young widow (from the Variety review).