You may be interested in

a) On DVD "The Bang Bang Club"  -- Based on the true story of a group of photographers, including two Pulitzer winners, covering uprisings in South Africa in the 1990s. Some insight and tough questions about photojournalism in conflict zones.

b) Book "Why Photographs Work -- 52 Great Images: Who Made Them, What Makes Them Special  and Why" By George Barr. Enhance your study of other photographers' material.