Artistic photography follows the beauty is in the eye of the beholder ethos. There is nothing inherently immoral about it.

Photography that is meant to make a political statement or journal actual events is held to a much different standard. Take this example:

The depiction is of an actual event, the right person attacking the left. However, the lighting and framing being captured on film makes the scene appear exactly the opposite.

Context is vitally important in how we judge what we see, and as photographers, we have the ability to change that context through the use of our framing. Any image captured that is used to interpret an event that leads people to a conclusion about that event that would differ from those that were actually there is an immoral image.

As a journalist, your job is to document history and relay it to others - and that is a vitally important task. If you are building a story to fit your own conclusion, then you're an activist, not a journalist, and passing your imagery off as truth is, indeed, immoral.