Protected by the Law, the Law of the Fist or survival. The Law is there to protect the civil and ones that will comply, whatabout the ones that don't. I think we call them criminals they do exist

Yes, criminals, and those who attack you aren't concerned about the law. Unfortunately, if you defend yourself in a way that is (in the law's eyes) unjustified, then you will also be considered a criminal in court.

I'm not saying it's fair--it puts the defender at a disadvantage. But unfotunately, it's the way things are.
You have to do what's needed, obviously. But, imo, you also have to be aware of the potential for what you do to be held against you. Saving your ass is pointless if you overreact and maim someone and can't prove you had to--you'll end up alive, sure, but in a prison cell.

"Seek not to follow in the footsteps of the men of old; seek what they sought."