Huh?
A thief steals things not because of a fear motivator, but because of a greed motivator: it's there, he wants it, he takes it - despite any fears of being caught.
Ditto for a host of other evils.
Sometimes the motivator may indeed be fear, but usually the behavior is like anything else: done because it is a means to an end ... just that for evil behavior, that the means may harm someone is discounted.
If anything, evil stems from a lack of fear. Small children will steal, hurt, break, lie, etc. - with absolutely no sense of fear, and no care, because they don't know better. That they "don't know" doesn't justify or excuse the behavior. In adults, the same behavior stems from equivalent don't know & don't care.
He's afraid of not measuring up the expectations of others, or he's afraid he'll never have the lifestyle he sees on TV unless he takes it from someone else, or he's afraid he won't have enough money for his next fix or his next meal. Greed is a fear-based emotion.
The kids are afraid they won't get any love or attention so they force the issue by misbehaving. Brattiness is a fear-based emotion.
Every murderer on death row is there because, down in the depths of his soul, something scared him so much that killing seemed like the only escape. Even serial killers of women are terrified of women on some level, and seek to exterminate what they are afraid of.
There is only love and fear - everything else is a derivative of one of those two.