Just because you are unlawful it doesn't mean that you are evil. In my unlawfuls, I usually aim for more of a "I'm not-nice" approach, instead of an "I eat babies" approach to interactions with people.
Sure, you may feel like a meanie when you kill those annoying powertraders who don't respond to anything, but oh well. Just pretend that they are the evil people, because they are. Imagine yourself as a lawman in a world where everyone has lost sight of what is truly good, and what is truly evil.
