I'm intetested in a general discussion on morality & ethics in photography

You can start with any genre really

For example (as discussed in another thread) - is it ethical to use an iphone bird call application to call in birds in the wild

It is ethical to bait animals to get a shot ?

Is it ethical to photograph someone without their consent ?

Should you jump someone's farm fence to get a nice landscape shot ?

Any other "can of worms" ?