A mysterious person behind the Pergola follows the limousine through one of the slotted windows in the Pergola. Look at the upper right of this clip.
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The Kennedy Assassination…the Man in the Pergola as Seen in the Orville Nix Film.
The Davis Report 
there are also two men inside the pergola, if you look at nixfilm frame by frame , you can see an image protrude from behind the 3rd shelter wall near zapruder, a streak of blue extends from the image directly towards jfk’s limo. these are perhaps the shots that hit gov conolly. also there is movement near where the black dog man is and also in the film the day the dream died, the nix film reveals a gunman shape near the white retaining wall, he seems to be near a white car of some sort. these men inside the shelter are also seen in the darnell film and the morman photo. a guy called Leroy Blevins points this out on youtube. I do not agree with all of his hypothesis, yet the gunmen in the shelter are definitely there. thanks mark, I have also seen your video on youtube, the interesting one is the couple that move back as if they see smoke or something emanating from the drain across the other side of the street. interestingly enough in the z-film they seem to have been erased. I believe the z-film has been edited, the black blob at the back of the presidents head is obvious. I am an Australian and as most of the world other than America believes jfk was killed by rouge members of the Cia, the mafia (INCLUDING FRENCH ASSASSINS), it is common mafia policy to farm out assassinations that they do not wish to have any connection to. Was LBJ involved, well he did have the most to loose ie billy soles,etc, and why on earth did he give allen dulles a role in the warren report. Such an enduring mystery. Also the Bronson film clearly shows movement in the tbsd windows (6th floor) by more than one individual, people like Mcadams are obviously paid apologists as it is so obvious.