For starters, there are multiple photos of the crime scene where the spent shells are in different positions. This proves nothing except tampering with evidence, which we see all over this case. Provide the evidence that puts Oswald in that window, firing any shots. Who was up there? Did the person in this window actually hit anyone with the "humanitarian weapon"? There is evidence of shooters from behind, but likely in other locations, since the trajectories don't line up with the TSBD. The backyard photos are extremely suspicious and not something I would use to buttress any arguments. Nearly every piece of evidence in the case has dubious origins and in many cases the chain of possession is shattered. If Oswald was the killer, all the evidence would fit together perfectly. Nothing of the sort is evident in this case. From the badgering of witnesses by Specter and Belin, to the murdering of witnesses who saw things contrary to the official story, there's an endless amount of contradictory evidence. I think it's a tremendous injustice that Oswald was framed for this. Instead of focusing on the real culprits, so many were led down the primrose path. This was clearly a political assassination orchestrated by LBJ, Hoover, and others since they both had much to gain by JFK's death and they are responsible for the cover-up.
I don't know any serious researchers who believe there were only three shots fired. It ignores the testimony of too many witnesses and common sense. Even the pathetic HSCA concluded at least four shots were fired, and there's evidence of several more. First let's look at the Silly bullet theory. We know from the autopsy witnesses that the entire theory is totally impossible since the back shot did not exit. How is this shot a threat to Connally? So that's one shot. Then there are multiple wounds from the rear on Connally. Was this one bullet or two? The other is the entrance wound in JFK's throat. This is another bullet that apparently didn't exit. But there's much more evidence to consider. What about the dent in the chrome of the limousine? The Tague wounding. The hole in the windshield (which is not seen until after the head shots). Other reports suggest at least a couple of missed shots (one in the grass, another in the street). Then there's the head shots. Seems from the medical evidence that there were at least two head shots and one was from the front at the right temple according to multiple witnesses. The Zapruder and Nix films show the president's head moving violently back and to the left. There's a massive hole in the right rear of the head that was covered up. Multiple eyewitnesses reported shots from the knoll. Photographic evidence shows a huge crowd of witnesses running up the knoll afterward. I'd love to see the "explanations" for this overwhelming evidence of multiple shooters. It's the totality of the evidence that's compelling to me.