It seems to be a common theme: denial, exposure, and then apology. There is enough evidence to suggest deliberate targetting (have you not seen those home made movies in which soldiers have fired on civilians as they drive past; or kill civilians and take photos with them as trophies??)

Apparently the australian soldiers can murder and get away with it:

http://theuglytruth.wordpress.com/2011/05/28/charges-dropped-against-aus...