I'm no expert on the assasination.
I've been to Dealey Plaza a few times, visited the 6th Floor Museum and over the years, have read a number of books.
I can't tell you who ordered the assasination or why it was ordered - but one thing seems pretty sure to me.
There was more than one shooter in Dealey Plaza.
Looking at the various testimonies of those present and the Zapruder film, it certainly does seem as though there were multiple shooters.
How many? I'd say 3 or 4. Triangulated fire. Guaranteed to make sure that Kennedy didn't leave Dealey Plaza alive.
So you say, and you argue based on the Zapruder film and eyewitness testimony.
Eyewitness testimony is famously unreliable - especially when it comes to things like the discharge of bullets or automobile crashes.
No human being can see a bullet in flight, let alone definitively witness where it came from and where it ended up. The more so when multiple bullets have been fired in rapid succession.
The Zapruder film is quite rudimentary and grainy and does not itself capture the bullets' trajectories.
I am vague on the facts, but did not a Congressional investigation conclude that very thing?
Ballistics and trajectory analysis conclude conclusively the shots were fired from the 6th floor of the Book Depository. I've visited Dealey Plaza at different times, the first time within a decade of the assassination. At that time Dallas was very sensitive to what had happened and still appalled that it occurred in their city. The years went by and Dallas eventually reconciled itself to the fact and, more recently, the Museum in the old Book Depository was built ... which I visited in the early 1990's and again a few years ago.
And the only people hit were Kennedy and Connally, despite the hailstorm of bullets that would have been flying across the plaza and into the crowds?
All you need do is roll the Zapruder film frame by frame.
You can see there are missing frames.