"Rebecca Peters:...in Australia...We are an outdoor country. We’re a frontier country. We have a lot of people who like to use guns.. in 1996, we had a mass shooting at Port Arthur in Tasmania. Thirty-five people were killed... at the time, it was the largest tragedy of that type ever in the world.... the politicians had always been intimidated by the gun lobby and had been reluctant to do anything. But in '96... all the states together... came up with a scheme of—a list of points that all the states agreed to put into their laws as a minimum standard. And that included a ban on semiautomatic rifles and shotguns; a (gun) buyback...to get rid of them; registration of all guns in every state; a much higher standard of licensing, including the need to prove that you have a legitimate reason... a 28-day waiting period; and various other measures, which basically closed the loopholes and raised the standard. And we’ve been much safer ever since."