@raccoonshouse
As I was as a child attacked for having the "wrong" stylograph, I can see how being an orphan might lead to discrimination. In my experience, if a child for whatever reason stands out enough, the child has either the choice of becoming a leading person of the group (e.g. by becoming a class clown) or bow down and become the target for possible harassment.
IMO Children can be "evil", as they fear no social consequences of bad behavior. At most they fear their parents and maybe the teachers. So as long as they don't see how what they do could be seen by those or seen as bad by those they don't really care for what they do (as long as they think it's fun).
That's one of the reasons why stuff like Santa Clause (who's watching you) or Jesus (who's watching you) can be so helpful in handling children. If they think someone is watching them and judges their behavior, they will not go beyond what they think might be reasonable for the watching party. On the other hand, if they do commit something bad but don't face consequences (e.g. they were a bad children in a year but got gifts from Santa anyway) they assume either that their value-system of whats bad seems to be wrong (this is a very bad situation) or that the entity in question doesn't watches or at least it's not seeing everything (which might lead to bad situations).