But from the start photographers proved resourceful. Foxx has written 13 books with the first four being study guides to help struggle students and the last nine providing awareness, literacy building skills and easy reads: Another American, Paul Strand, took photos in the Bowery: Walker Evans's Women On a Subway. As for the Elders who gawped at Susanna bathing, then tried to blackmail her, they were put to death. As Susan Sontag puts it: A more recent trend has been to show voyeurism in action, with those watching, rather than those watched, the centre of attention. But as Sontag points out in her eloquent essay Regarding the Pain of Others, while images of distress "may spur people to feel they ought to 'care' more", they may also feel "that suffering and misfortune are too vast, too irrevocable, too epic to be much changed". With violence, as with sex, viewers don't always respond as the artist intends. And yet, as Sandra Phillips says, certain photos taken for security reasons — aerial reconnaissance shots of missile sites, for example, or the green glow of buildings seen through night-vision goggles — have a strange abstract-expressionist beauty. If the models hadn't fallen on hard times, or weren't addicted to hard drugs, would they be willing to expose themselves? One model stares boldly back while touching herself; others are masked, half-clothed or reflected in mirrors. Photos from the Vietnam war — of the My Lai massacre, for instance — undoubtedly influenced anti-war sentiment. All art involves looking.