[ctdonath2]

Jog my memory on what makes that a fake...

[a fool in paradise]

The claims are that the shadows don't line up. Reportedly there were also several "attempts" that were located (stagings of the photo by the government).

Oliver Stoned lifted the scene in JFK from the 1970s movie Executive Action.

http://www.museumofhoaxes.com/hoax/photo_database/image/oswalds_backyard_photo/

"However, the photo was real. The variations (and accidental erasure of the sniper scope) were caused by photo editors touching up the photo in different ways in order to heighten the contrast between dark and grey areas. This was a common practice in the publishing industry at the time, due to the limitations of the printing process."