we certainly have a violence problem. The victims usually have nothing to defend themselves with. How long was the Victorian Govt in denial about African gangs and the NSW Govt in denial of Muslim Lebanese rapist? Yep no real problem until personally affected. Usually lefties living in leafy suburbs with little immigration repeat the mantra of how good it is in Aussie re crime. They insist on inflicting crime on others to support their ideology.

If a knife is used then a home-owner or attack victim can't just fire a gun, the defence must be proportional or reasonable .
Q. about a 'heart warming story'. What would the court say if a white druggie pointed a gun at a black and the black shot him dead..hmm..

nnn,

In NSW one only has to reasonably fear for one's life, and the various State police have shot people who threatened them with knives.
Personally I'd use my walking stick.

Ref the 2nd part, probably a lot would depend on the Court and its location, which in no way alters the fact that in some counties one is encouraged to defend one's self, unlike Australia where one is not allowed to possess ANYTHING for the purpose of self defence.

Although cannons are prohibited weapons in NSW they are not in SA .
They can be registered in NSW and probably mounted on a car without a firing mechanism but with a bit of practice in fast fitting you'll be fine. You need to reasonably fear the drone pilot has plastic explosive coming your way and use reasonable force or his uncle will track you with a drone scope . Walking sticks with leather strap for final sharpening are ideal.

nnn,

You don't know much about cannons either!

This little dude was used in the Civil War and at this light weight it will comfortably ride on your cab roof.
"12-pounder Mountain Howitzer bronze.
220 lbs"

"The smallest working cannon measures 6.88 mm in length, , was made by Marcus Hull (Australia) and fired in Melbourne, Australia, on 4 July 2015."
"Swivel guns are among the smallest types of cannon, typically measuring less than 1 m in length and with a bore diameter of up to 3.5 cm . They can fire a variety of ammunition but were generally used to fire grapeshot and small caliber round shot. They were aimed through the use of a wooden handle, somewhat similar in shape to a baseball bat, attached to the breech of the weapon."

After firing , the baseball bat and walking stick are available for tidying up the the perpetrator.