How far gone are you to think that kidnapping and robbery aren't violent acts that justify violent responses? If you try to detain me illegally (also known as false imprisonment) you're just asking for a face full of lead. But 'Murder' is unlawful killing. This would be self-defense.
Right, but the law doesn't allow you (in California, at least) to assume that someone (for example) putting a cone on your car is also intending to rob or kidnap or kill you.
And even then, you are not legally allowed to use deadly force to protect your belongings; you can only do so if your life is in danger.
Certainly some places have "stand your ground" and "castle doctrine" laws that give you more latitude to use self-defense as legal justification, but even in places like that, it's not absolute.
The acts I listed [edit: or the one in the grandparent post - it’s literally talking about putting a cone on a car…] don’t necessarily involve violence.
Even if they do, self-defense has to be proportional. Laws obviously differ in different places, but, generally, yes, you can defend yourself. You generally can’t kill someone unless you yourself are under a plausible threat of death though.
