That's why I never fight anyone over beliefs or principles; I engage in conversation. I start discussions (not aggressive ones), listen to their opinion, and express my own. Of course, it's harder to talk to aggressive people. You won't convince a skinhead with words, for example. But here – yes, here you have to use force. Personally, I consider evil to be anything that causes suffering to the innocent, but that doesn't mean that the one causing that suffering is also evil. Take, for example, the Inquisition: they weren't evil; they believed they were doing the right thing. Similarly, a person who has had a very difficult life, becomes embittered, and also starts "paying people back in their own coin." You can commit evil unintentionally. Carelessly spoken words, arriving late for a date that they were eagerly anticipating. A husband gets drunk out of grief and beats his wife while intoxicated. In a sober state, he wouldn't have done that (although there are different kinds of husbands). That's why the Lord said, "If someone strikes you on the right cheek, turn the other," and that's why Yeshua Ha-Nozri gave us the eleventh commandment: "Love one another, for God is love" (see signature). I apologize for the unintentional proselytizing, but I couldn't explain the principles I live by any other way. Before striking an evildoer, find out why they are doing evil. P.S. I could write more, but it would turn into a sermon, and the post is already quite long.