In the history of social advocacy, photography has played a key role. It makes sense: a compelling photograph has a visceral impact that goes beyond words.

Lewis Hine’s photographs of child workers provided evidence of abuse that led to a change in the law; Nick Ut’s image of a girl fleeing a napalm attack alerted the world to Vietnam’s horrors.

In such situations, the cliché holds true:
a picture really is worth a thousand words