Can you find evidence in the Bible to support your answer?
Jesus has united himself to all mankind (including your enimies) to the extent that what we do to others we also do to Him. Christ asks us to strive to give our love not only to the poor and needy but to our enemies, too.
Remember we are asked by Jesus to become perfect like the Father. Is it possible for us, limited human beings, to become perfect as the Father? Yes or No?
Obviously you and Alitaptap do not know the Church teachings:
**Legitimate defense **
CCC 2263 The legitimate defense of persons and societies is not an exception to the prohibition against the murder of the innocent that constitutes intentional killing. “The act of self-defense can have a double effect: the preservation of one’s own life; and the killing of the aggressor. . . . The one is intended, the other is not.”
CCC 2264 Love toward oneself remains a fundamental principle of morality. Therefore it is legitimate to insist on respect for one’s own right to life. Someone who defends his life is not guilty of murder even if he is forced to deal his aggressor a lethal blow:
If a man in self-defense uses more than necessary violence, it will be unlawful: whereas if he repels force with moderation, his defense will be lawful. . . . Nor is it necessary for salvation that a man omit the act of moderate self-defense to avoid killing the other man, since one is bound to take more care of one’s own life than of another’s.
CCC 2265 **Legitimate defense can be not only a right but a grave duty for one who is responsible for the lives of others. **The defense of the common good requires that an unjust aggressor be rendered unable to cause harm. For this reason, those who legitimately hold authority also have the right to use arms to repel aggressors against the civil community entrusted to their responsibility.
As you can see the Church not only teaches you may use deadly force (if necessary) to defend yourself or family aginst an attacker, but you have a grave duty to defend against an attacker. In other words you may not stand back and watch someone attack and injure, kill, rape one of your family.
I now ask both of you to answer the question I posed before.
Would you stand back and not try to defend a family member against attack.