The Independent | Researcher: U.S. could learn from Aussie gun buyback USA TODAY Emergency personnel treat shooting victims near near the historical Port Arthur site on Tasmania on April 28, 1996. A gunman with a high-powered rifle killed 35 people in the worst mass killing in Australian history. The massacre led to the passage of ... Tory Shepherd: Australia cannot be complacent about guns because of no mass ... Australians still sticking to their guns US must respond with tough regulatory steps |