God said love your neighbor as yourself,so you are as important as your neighbor when it comes to protection,but the advise that Jesus gives is if someone smacks your cheek turn to him the other cheek to smack.
The Bible says do not resist evil,which means physical violence towards ourselves.We are to resist evil,spiritual,but we do not resist evil,physical.
Jesus said if physically abused do not physically abuse back,if verbally abused do not verbally abuse back.
I do not believe we are justified to kill anybody regardless of the circumstance.
Now that is a hard pill to swallow for some people to accept,that somebody can hurt their family and they cannot do anything about it,for they are not to do harm to anybody regardless of the situation,but to fight against them to hurt them is fleshy thinking and not spiritual.
The truth is if your family is under the protection of God no harm should come to them,like when Jesus could escape in the midst of the crowd when they sought to lay hands of them,for God was not ready to give us His body yet.
And also if your family is saved then they are alright,for to be absent from the body is to be present with the Lord,and Jesus said do not fear those that can kill the body and then can do no more,but fear God.
It is hard for us to understand how we have to sit idly by because we cannot raise a hand to anybody,me included,but it is what God wants,let Him handle it,and God said vengeance is mine,I will repay,do not take matters in to your hands.
We know for sure,and do accept,that we cannot go around and pick fights and physically assault somebody,but we think we are justified to fight back if they start it,and are trying to do us and our loved ones physical harm,but God does not see it that way.
We think they deserve it for attacking us and people we care about.
To God,if you fight back and harm them,then you are no better than them that attacked you,and you are acting like them,and their is no justification to attack them even if they attack you first and the ones you care about,because you are to be different than the world and children of God,which Jesus said be harmless as doves.
Like Jesus said if you live by the sword you will die by the sword,for the same thing you dish out comes back on you.
Just like we cannot fight back if we personally are physically or verbally abused,we cannot fight against someone if they attack the ones we love,for we are to be different than this violent world,and God will handle it and provide protection,and if not they will be present with the Lord,and if not right with God then they do not have His protection,but the Bible says,that because you are saved,it sanctifies your children,which by the children were unclean,but by the believing parent the children are not holy(1 Corinthians 7:14),so the children are protected.
That's a hard one to grasp,not to fight back when attacked,but to believe we can attack back,is of the flesh,and not spiritually,and we might not understand it,but God knows spiritual ans sin,and says not to fight back.
7And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.
8And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world.
9If any man have an ear, let him hear.
10He that leadeth into captivity shall go into captivity: he that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints(Revelation 13:7-10).
The Bible says the saints will not be united with Christ until the beast,the man of sin,appears claiming to be God,and that is because God will not take His children home until the world takes the mark of the beast,in which they cannot repent of their sins anymore,and make war against the saints.
One day the beast system,under the rule of the man of sin,will make war against the saints,in which God gives a warning to the saints not to fight back,for if a saint takes a person captive during this war,he must receive captivity,and if he kills with the sword,he must be killed with the sword,which God says this is the patience and the faith of the saints to endure this and not fight back,for if they fight back they are putting themselves in the place of the cruel world and will be judged among them,unless they repent of course before the resurrection.
That means during this war they cannot fight back to protect themselves and cannot fight back to protect their fellow saints,whether they be family,or friends,and if they do have family that is not with Jesus and have taken the mark,then their family that took the mark will not care about them anyway as they go forth with the fury of a devil to fight the saints.
There is no justification because you are a police officer or in the military,for a saint should not be in those services if they might have to shoot someone,and God said all wars come from man not Him.