I would defend my family also. I agree with you. That's why I am asking for clarification on the verses you are using in you argument to not get involved in this world. . Resist evil. Resist not evil. Turn the other cheek. Jesus doing nothing when the were beating Him and hanging Him on a cross.
We are to resist evil in our lives.
And Jesus also said "resist not evil" (in the context of people doing evil to you....they did the same to Him).
Insofar as getting involved in the World, I believe we should follow Jesus' example.
We are involved, but through Christ (not by becoming of the World).
In Jesus' time they lived under a fairly oppressive government. There was immorality. There were abortions. The tax policy was unjust. Homosexuality was practiced and advocated by that community. There were political divisions.
Which political sect did Jesus join? What did Jesus say about those secular groups?
What about Paul? He never engaged the worldly powers to change the world, much less participate in politics. He told Christians that they were once like those in the world, but he didn't become a part of that World.
And then you have the compromises. Politics is compromise.
Anybody who supports the GOP, DNC, or Libertarian party are actively supporting abortion as choice.
Each has to decide of that is worth what they think they may gain.
In terms of your question, I would not try to kill anybody to defend my family. But I would try to defend them. I certainly wouldn't shoot somebody just for breaking in my house.
As far as the verses go, I have already provided them in this thread.