This raises several questions:
1. When did the shooter recon the area to determine a suitable firing position?
2. When did he know that he’d have access to that ladder and roof on the day of the rally?
I doubt he just showed up hoping to find a suitable firing position. Seems to me he either: 1)knew ahead of time he’d have access, which implicates a conspiracy or 2) the SS was grossly incompetent. The more I see images like this, the more I’m leaning toward the former.