In April 1996, Joe Vialls said that he knew who had really killed people in the Port Arthur massacre, and that it was not Martin Bryant, who police said had killed people. Joe Vialls talked to Wendy Scurr who was there, and Stewart Beattie who was a gun expert, and he also talked to Martin Bryant's mother, to find out what really happened. Joe Vialls wrote a book and had many articles talking about what he thinks really happened. You can see 9 articles that Joe Vialls wrote here . Joe Vialls says that the Australian government killed people so that they could take guns away from people. This is the same story that the Australian National Rifle Association says.