This fully revised and updated second edition of Photography as Activism is both a study of activist photography, and a call to action. It offers students and documentary photographers insights into the theory, history, philosophy and practice of photography as activism. The book is lavishly illustrated with 85 key historical and contemporary images. Chapters have been revised to include contemporary ideas about representation, gaze, agency and decolonizing the camera, as well as an expanded history that includes work from the global South and the civil rights movements in the US. A new fourth chapter focuses on activist practices that go beyond traditional reportage. It features 19 new interviews and updates on the original interviews. Photographers talk about their practices, the challenges they face in the 21st century, advice on working with NGOs and non-profits, and how to form partnerships to expand the dissemination of their work. Photography as Activism is an essential text for courses on documentary and photojournalism, and those that explore art as social change more broadly, but also a call to action for young photographers to pick up their cameras and advocate for change.