A little snippet in the comment below well-known anti Phillip Alpers's article for the ABC on the 20th anniversary of the PAM, written in the comments section by a John Coochey:
Interestingly before Port Arthur the ACT and Northern Territory had identical firearms regulations pretty much as the alleged National laws brought in afterwards. The ACT had the lowest gun related deaths and murders in Australia. The Northern Territory the highest. About says it all. The Northern Territory had a high proportion of males, indigenous and alcohol consumption. The ACT the highest income, highest level of education and lowest levels of domestic violence. A good example of dependant and independant variables.
http://www.abc.net.au/news/2016-04-28/a ... ur/7365790