Video says it all but I do agree on one thing. No guns should ever be loaded in a gun store or pawn shop. Why they would have left a round in the chamber in store I don’t know but I’d say the shop owner has some ‘splainin to do. Stupid on both sides of the aisle...
IIRC every time I have looked at a weapon in a store/gun shop, first thing the counter person does is check to make sure the weapon is clear.
Because a semi-automatic pistol is unloaded when you drop the magazine...
...I learned that from watching Hollywood pitcher shows.
Seriously, though, the gun should not have been loaded, the gun store guy needs to learn how to properly clear a pistol, the cop needs to learn that you never trust that someone else has properly cleared a pistol - do it again yourself, the cop needs to learn not to cover his anatomy with the muzzle.
I’ve been at gun shows where anti gun nuts have come in and loaded a round in guns on the tables hoping to get someone shot and shut down the gun shows.