It is immoral from almost any point of view to refuse to defend yourself and others from very grave and terrible threats, even as there are limits to the means that can be used in such defense. ↗
Frankly, right is right and wrong is wrong, particularly when a parent is talking to a child. A bright line around moral responsibility is very important. ↗
For me, an area of moral clarity is: you're in front of someone who's suffering and you have the tools at your disposal to alleviate that suffering or even eradicate it, and you act. ↗