Spotted on a photography forum, answering the question, "Is Photoshop Killing Photojournalism?"
I think the issue is not about whether Photoshop can save a bad photo or not in the storytelling sense. Rather, it is the manipulation of photos (additions/removal of elements) that leads to either a biased perspective reflecting that of the image-maker or improving the aesthetics (add drama, fix composition, altering colours) that were not present at the point of the picture being captured.
You can see examples of such on http://www.snappedshot.com/, a website dedicated to exposing dishonest journalism. it is also quite a humourous read.
the black star agency recently published an e-book on photojournalism ethics in this age. click here to download. :)