This video appears to show the shot came from above and a bit behind on Kirk’s right.
The streak near his right ear is his earpiece wire flying away from his ear upon impact from the bullet.
The impact of the bullet also pulls a further and thicker length of the cord running to his earpiece up, and it is this cord that you see sort of circling upward under the front of his shirt and around the back of his neck.
The wound on his neck’s left side is the exit wound and conforms precisely with how exit wounds appear but not entry wounds.
There have been many reports and videos of super fast, very small drones present at the rally during his talk.
It may be that one of those drones fired the shot that killed Kirk. Mercifully, if that was the case, he would have died instantly.
Another point worth making is that if he was killed by a miniature, military-grade attack-drone, we can be sure his assailants were professionally trained and equipped. And there was more than one.
This video appears to invalidate the lone sniper on the roof story. ABN
American Buddhist Net 
His earpiece would have given off a unique Bluetooth signal. It’s possible a drone and/or its projectile targeted that signal, ensuring precision. ABN
This clip looks like it might have come from this much longer analysis by a fellow who claims to be a Marine Scout sniper: https://www.youtube.com/watch?v=ltakvGyzfZs&t=4s
Thanks for the link. I posted that video, which is excellent, on 9/15. It is from that vid that I learned the wound on Kirk’s neck was a classic exit would and not an entry wound.
I notice in the video above that we do not see any projectile leaving the exit wound or damaging Kirk’s shirt or otherwise showing its existence in the area beyond Kirk. We do see what looks like a spot of blood on his shirt though. {EDIT: Maybe that spot is a hole from the projectile.]
This seems to be a significant anomaly and leads me to wonder if the projectile was something other than a bullet, like a mini high-tech missile that self destructs or is even able to fly away after damage done. That’s very speculative but worth some thought.
Chances are pretty good that I found that video here on your blog the other day. Sorry for the duplicate. And I noticed the same thing; you can’t see the bullet (or whatever it was) exit from any of the 4 angles he shows in the video, and I just assumed that was because the space we can see from any of those angles is pretty small (maybe a couple of feet at most), and the projectile was still traveling fast enough to have passed through that space between frames. (I recently set up a trail cam in my yard and it caught video of a bat flying by; when I went through that part of the video frame by frame, the bat “disappeared” in several frames in its flight through the camera’s field of view, and I assume that the projectile in question was moving much faster than a bat.)
so far I have not seen any evidence showing where the projectile went. it does seem to have gone through Kirk’s head (hate saying that) but if it was from behind it would have appeared somewhere to Kirk’s left. if you have any videos showing the area to Kirk’s left, there may be something there. bullets/ projectiles can do weird things. it’s possible what hit him was very small, something possessed only by sophisticated militaries, and thus seems to have disappeared