Here you go dumb ass...from wikipedia, Australia mass murders.....
- Monash University shooting - In October 2002, Huan Yun Xiang, a student, shot his classmates and teacher, killing two and injuring five.
- 2011 Hectorville siege - A mass shooting that took place on Friday, April 29, 2011, in Hectorville, South Australia. It began after a 39-year-old male, Donato Anthony Corbo, went on a shooting rampage, killing three people and wounding a child and two police officers, before being arrested by Special Operations police after an eight-hour siege.[6]
- Hunt family murders - Geoff Hunt killed his wife and three children before turning the gun on himself on September 9, 2014.[8]
So you got one person who killed his family. That doesn't really count.
the other two were pretty minor.
But I'll be nice today and say that wow, they had three incidents in 20 years since a ban.
We've had 249 since Sandy Hook, which was only three years ago.