Australia suggests that US change its Gun Laws.

"It doesn't really matter to what extent you might recognize or even support rights to own firearms," he says. "Our governments have the pre-eminent responsibility of ensuring public safety."
Australia's leading gun owners groups declined to be interviewed for this story.
But privately, they acknowledge there was little they could do to stop the new legislation and now that it's the law of the land, they're willing to live with it.

Gun violence hasn't been completely eliminated in Australia. But gun-control advocates are quick to point out that there hasn't been a single mass shooting in the 16 years since the laws came into effect.

http://www.npr.org/2012/12/21/167814684/australians-urge-u-s-to-look-at-their-gun-laws