Via Bob Owens at Bearing Arms. The following are my comments and thoughts and not Legal Advice. I am too ugly to be playing a lawyer on the webs.
The guy would not quit. After hitting the pedestrians, knifing 2 rabbis (one died) and shot by the civilian, the bastard keeps going even when downed. That bring us to the concept of the anchor shot which is basically a properly placed shot to the head so the perpetrator stops for sure and no more actions would be forthcoming.
Anchor shot is controversial. On one hand the idea that a still living perpetrator, properly motivated by conviction and/or drugs may continue his wrongdoing after a brief pause and needs to be stopped for sure, versus the perception that the shooter is executing the bad guy with a coup de grace and the forthcoming legal trouble he might be facing.
In a case like the above, the shooter has plenty of evidence and help to go around: witnesses, the video itself, the victims being knifed and being Israel, they don’t go ACLU for the terrorists so even when he did not put one in his head. After the second time the terrorist got up, a properly placed shot to the brain pan would have been the right response as he looks like a continuous threat.
Same case and on this side of the world? You have to figure out where you live. Do you live in an area where the local prosecutor would understand the concept of continuous threat or he/she will look at you as extra 20,000 votes for the next election if he dresses you in all orange, specially if he is trying to pander to the #ColorOfTheDayMatters crowd. Or live in a State that does not provide you with immunity from civil prosecution and the relatives of Knife Boy are gonna come after your hard-earned belongings because he was “a good kid that loved his momma but too a wrong turn”? Unfortunately, you have to add that kind of crap to your equation.
Other anchoring shots (but without the finality of immediate death) would be to the pelvic griddle and the knees. If you happen to place a good shot to the pelvis and break it, there is no way in heck that the guy will get up again, not matter how determined of full of flakka he can be. The knee is much trickier as it is a smaller target and probably moving a lot so it basically means a contact shot and that is being too close to the subject.
So what’s the final answer? There is none. It will depend on the events and circumstances and your own set of rules to use deadly force