You act like most probable place for such an event, when discussing on HN, ain't simply some rural US. Some folks are crazy and vastly unbalanced, period. If they have access to guns, bad shit happens frequently.
The amount of folks in US who legally own guns and never ever should be allowed to touch one is staggering.
More than 50% of that 10.84 consists of suicides - a fairly typical, convenient omission for folks with an agenda. "Get killed" would imply that "you" weren't the actor doing the killing.
Somalia suicide rate: 7.90 per 100K
United States suicide rate: 14 per 100K
How many of these US and Somalia deaths are associated with organized crime?