Book excerpt: Witness in Our Time traces the recent history of social documentary photography in the words of twenty-nine of the genre's best photographers, editors, and curators, showing how the profession remains vital, innovative, and committed to social change. The second edition includes a new section of interviews on documentary photography in the field and an exploration of the role of photojournalism in 21st-century media. Witness in Our Time provides an insider's view of a profession that continues to confront questions of art and truth while extending the definitions of both.