Well I guess there needs to be a definition of what is a staged photo
One that is set up to take into account the problems of early Photography.. OK Just stand there, don't move, assume a pose type staging...
Or Here are some fake guns, lets add some blood, lets spice up the background, etc etc
I would tend to call photos under the second condition staged.. In the first because of the limitations of the media those photos at least tried to be as accurate as possible