"We all wanted our pictures to change the world. We didn't want to just illustrate some terrible situation; we wanted to think that when you saw all our photographs that you'd be so moved or disturbed or motivated by these pictures that you'd want to do something about it."
Photographer Rick Smolan, formerly of National Geographic, curates a collection of 100 years of photos documenting the course of social justice in the United States, from the perspective of various groups of people who have been marginalized.
