I have a question about loving yor enemy.
Do you think it is okay to run from someone you love because they only want to hurt you?
How about an abusive spouse or parent. Isn't it alright to run?
Jesus healed the servant of the Roman officer but didn't he tell his followers to run when the Roman armies came to injure and further dominate the Jews of Jerusalem?
If we are "wise as serpents and innocent as doves" we do use common sense.
If someone is simply aggressing us as part of a mob and only see us as a faceless mob it is our job to change that as much as possible. First we have to see them as an individual human being so we don't make them an enemy in our heart. Then we look for an opportunity for them to know us as an individual human being.
Jesus and the Samaritan woman was such a moment . He surprised her with basic human decency and interest. Not condescending to her.
That was a successful moment of Jesus lovingly reaching past the walls of prejudice and the woman reaching back.. But it doesn't always happen that way. And your individual actions do not change the whole world.
Later Jesus going to Jerusalem receives not even minimum hospitality from a Samaritan village that he desired to stay in overnight on his way to Jerusalem. The Samaritans take up their traditional stance as "enemies" just because Jesus doesn't intend to camp on them during the advent to Passover and they wanted evidence that he was now throwing over to "the Samaritan side" (People don't seem to want peace in a feud. They seem to want domination. That is a problem for me too). And Jesus' disciples likewise pick up their old "enemy" view of Samaritans and want to go "old testament" on them. James and John say: "Lord, do you want us to call down fire from heaven to burn them up?" But Jesus turned and rebuked them, and they went off into another village.
I have found that Jesus was pretty real about what he expected for his followers. But there is no pleasing some. Christians who make the decision not to live by the sword are accused of cowardice or foolishness. But I find them to be the true pragmatists. Engage with people individually when you can but if you cannot-- leave the scene as Jesus advises (Matthew 10:23). One thing is certain--killing an enemy doesn't eliminate them. It only makes more.