> America is 11th per 100,000 deaths by firearms
About half of those deaths are suicides. Some countries do not count suicides by firearm as homicides like the US does. So it can be difficult to compare.
That said, this tragedy touches upon a couple of ugly issues. First, nobody can have an honest conversation about gun law in the US because so many of its politicians have been bought and paid for via campaign contributions from gun manufacturers and their advocacy groups, such as the NRA. They will not bite the hand that bribes, err, feeds them. Nothing is going to change until election finance law changes, and that won't happen until corporate personhood is revoked.
Second, many people in America see these shootings as acceptable losses. When you exclude homicides in poor urban areas and suicides, the homicide rate by firearms in the US drops to rates similar for Eastern Europe. They fear that without arsenals, Obama and his henchmen might show up to their farm and seize it for redistribution to poor blacks and illegal immigrants. Or they'll show up in tanks and burn them out, like Waco or Ruby Ridge. Or some other moonbeam fantasy that AM talk radio hosts dream up to keep their listeners paranoid and tuned in.
If any legislative changes come out of this shooting, it'll be to get more guns into schools, not fewer.