Australia's gun laws and the latest US mass shooting

As the United States grapples with the fallout from its latest fatal school shooting and how that might affect the country's gun laws, Australia has now reached 22 years without a mass killing.

A security official holds an armalite rifle similar to the one used in the Port Arthur massacre, handed in for scrap in the gun amnesty Source: Getty Images

The last, the Port Arthur massacre in 1996, prompted a public outcry for gun reform.

And that reform came, driven by then-prime minister John Howard.