Unless you took the photo yourself, you're not in a position to claim that. You cannot know.
We do know that at least one photo was posted with the claim that it was from a Catholic website; however, it was from the homepage of a new age nutjob who never even claimed to be Catholic.
Another photo was purported to be from a basilica in Rome, but the photo was taken in such a way to make it IMPOSSIBLE to know where it was from and no known photos of the basilica show anything resembling the photo.
And then there is a photo taken of what appears to be a fallen cross in a graveyard of a country that has had devestating earthquakes and decades of civil war.
He knows if he photoshopped it or not, most people fully understand what he means.