Equivalent to filming someone taking a crap, from the point of view of the toilet bowl. It is tempting to feel sorry for these people, but when one considers all the millions of people living in similar circumstances who actually manage to lead dignified lives and raise their children to be honest citizens one realises there are choices and that our lives are inevitably marked by the ones we make.
For a very different perspective, watch "Waste Land", a true documentary that inspires instead of wallowing in the filth.