How’s that gun confiscation thing workin’ out for ya, mates?! You guys need a Bill of Rights with a Second Amendment.
Australia also has strict knife control.
You are not allowed to have a knife on your person or in your vehicle unless you have a "good reason" to have it there.
Self defense is not an option for a "good reason".
The Australian Constitution was written at the height of Western Civilization, when the rights of Australian citizens were reasonably well respected, about 1900. From Wikipedia:
Some delegates to the 1898 constitutional convention favoured a section similar to the bill of rights of the United States Constitution, but this was decided against. This remains the case, with the Constitution only protecting a small and limited number of constitutional rights.