In 1996, just 12 days after 35 people were killed in a mass shooting in Port Arthur, Tasmania, the government of Australia enacted strict gun control legislation, including a ban on the sale and import of all automatic and semi-automatic rifles and shotguns, and a gun buyback program. Since then, there have been only one mass shooting in Australia, and gun homicides decreased nearly 60 percent. Correspondent Seth Doane talks with Australian politicians, and with a victim and gunowner, about the sweeping changes. (A previous version of this story was broadcast on March 13, 2016.)

"CBS Sunday Morning" features stories on the arts, music, nature, entertainment, sports, history, science and Americana, and highlights unique human accomplishments and achievements. Check local listings for CBS Sunday Morning broadcast times.

Subscribe to the "CBS Sunday Morning" YouTube channel: http://bit.ly/20gXwJT
Get more of "CBS Sunday Morning": http://cbsn.ws/1PlMmAz
Follow "CBS Sunday Morning" on Instagram: http://bit.ly/23XunIh
Like "CBS Sunday Morning" on Facebook: https://bit.ly/3sRgLPG
Follow "CBS Sunday Morning" on Twitter: http://bit.ly/1RquoQb
Subscribe to our newsletter: http://cbsn.ws/1RqHw7T
Download the CBS News app: http://cbsn.ws/1Xb1WC8
Try Paramount+ free: https://bit.ly/2OiW1kZ

For video licensing inquiries, contact: licensing@veritone.com