You probably missed it; however, near the end of the video (behind “Snake Girl”) there are two young black men ...the one in a yellow shirt and khaki pants appears intoxicated and agitated. He pulls an AR-style pistol out of a bag or pack (the pistol appears to have a holographic or red-dot sight mounted on it). The other black individual appears to be his friend and is pulling him away as if trying to restrain him and calm him down.
As you said, apparently nothing happened; however, it looks like it came very close to a mass casualty event ...and thank God the young man had enough sense to restrain his friend and keep him from doing something really stupid, reckless and likely deadly!!!
I did miss that. Which is right at the point where the videographer realizes it’s time to leave.
Not remarkable in the hood, but unusual for Buckhead.
For now.