Yes, if it was the right situation, person and weapon, I would.
I imagine that if I had the opportunity to save a loved one from imminent danger, but by doing so had to put down an attacker, I'd do it. Probably without hesitation. I've had dreams with similar scenarios. It's television. You see something so many times, you see it happen again and again, and it becomes etched in your head. It's as if hollywood writers aren't just writing movie scripts anymore, but your subconscious as well.
Like Franta touches on, I think we've been exposed to so much violence and anger that we've become desensitized.
