Checking out his backstory... he is an emt. He did go with a group but as an emt to help both protesters and the patriot group.
if you watch ALL the videos, in the first one he was being chased by a guy throwing things at him, one of which was a brick until he was cornered between a gas station and a car... he turned around and shot the guy (the headshot) at what looks like in the vid near point blank. Here’s what’s interesting. You can clearly see he is carrying a small emt kit, he returns to the guy he shot, gets out his phone and calls 911. He went back to help the guy he just shot.
Then the mob started chasing him again.. and he ran again. Tripped, kicked in the head, hit with a skateboard in the head (second guy he shot had just and was still hitting him in the head with a skateboard)... third guy he eventually shot actually stopped.. kid pointed gun at him but showed some restraint in the middle of the chaos and did not shoot. This guy pulled a pistol and came forward and was shot in the arm. Interesting really if you study Grossman. He hit the guy in the arm, right above his handgun. Total 100% speculation on my part...BUT... if he was hyper focused on the handgun would make sense the bullet went were his eyes were. No way of knowing if that is actually true. Could be coincidence, but interesting.
There are longer, multiple view videos out there worth watching.
Bad situation and Hope he doesn’t get hung out to dry for it.