Hi, Terry.
I know it seems like I wasn't engaging you on the other thread over this matter, but I just don't think this is as black and white as you do.
'Turn the other cheek' and 'love your enemy' were both exact opposite of taking vengeance, or eye for an eye, which I believe was a necessary teaching. At the same time, this teaching could be taken literally in every case, transforming someone into a pacifist... and that requires the utmost faith that God will take care of things in this life or the next.
But I think we have to use our brains, and temper our knowledge with the compassion and mercy that Jesus taught. I believe that Jesus expected us to use our brains, and to look at each different situation on its own merit. This means we're going to screw up, over and again. (But applying the exact same standards to every situation is flawed also)
If someone's conscience allows them to be the extreme pacifist, then I don't think they have sinned. If someone's conscience tells them that 'loving their enemy' shouldn't mean allowing their wife or daughter to be raped (since that isn't exactly showing love thy neighbor)- and they defend those innocents by whatever means necessary, then I don't think they have sinned either.
Each scenario requires faith that God knows our conscience. That faith in God will help us make the right decision. And that we can be forgiven when we make the wrong decision, because we are acting with love as best as we know how. (Love covers over a multitude of sins)
Tammy