Photojournalism Ethics

I personally think photojournalism ethics should be situational. Although there may be right and wrong...there is always something in between that could be labeled as both right and wrong. Anything that has to do with an important event, possibly historical, relgion, politics, death,..etc anything that is an important situation shouldn't be manipulated. I believe that some photos capture the truth... But there are photos that were thoughtfully planned and only show part of the truth which includes that what was in the picture was set up to look like that in a single moment. The photo itself is true... But what happened in the photo might not necessarily be true.
The only decisions I have made that have "editted" reality is when I changed the picture sharpness, giving it a better photographic quality. It is important that news editors have made the ethical standards clear because if there weren't rules to follow, then photographers would distort different pictures of important situations to make an illusion that could cause chaos to viewers looking at it. It's kind of like writing a false story about a death, or something beneficial to one's knowledge. It's ethically and morally wrong.