What function does calling someone 'evil' serve? I think it makes us feel less powerless. It lets us "strike back" against someone who has offended -- but only in our own minds. It has no real positive effect in reality. Try telling someone who has offended you that they are evil. The most incorrigible will laugh at your impotence.

Understanding how people get that way is more effective in correcting situations than using names. That has an internal, psychological effect -- but solves no problems. Understanding how things work makes effective correction more likely.

What I think, anyway.