From a newspaper perspective:
Is asking the subject of a journalistic story about what-ever to move over so that the image of them doesn't have a power poll sticking out of their head creating a false image?
Asking the subject to move to avoid the head growing a pole is not only okay but highly recommended because you can't remove the pole in processing. Why not clone the pole away? Because that would create a record that the pole was not there. Asking a subject to move next to the bloody body would not be okay at all unless the shooter works for the gutter press which lives for that sort of garbage.
There's no problem with good lighting unless it is used to make a subject look bad. You don't get to make the event organizer's pore stand out just because she is unpleasant and difficult.
It depends. If shooting straight news, especially action, you do not get to play director. If shooting a headshot or a feature you do.
Most pictures taken out of context provide false information. He doesn't always look so serene. Most of the game was boring until she made that great jumper. That's a beautiful new restaurant but don't look in the dumpster. And it's a rare story that provides full context. Responsible newsrooms just work hard at coming as close as time and space allow. It's not for nothing that most papers have the same unofficial name: The Daily Miracle.