Have those with candy try to persuade someone else to take the candy.
Victim is to resist the temptation, if possible.
We teach children to stay away from strangers. You never know what the stranger's motives are for approaching a child. With all the evil in the world today, we just don't want our children exposed to potential danger. So we teach them to stay away from strangers, don't take anything from a stranger, and to yell, scream, kick, etc., if a stranger tries to get them into a vehicle. However, you probably remember from your childhood that strangers aren't the only bearer of evil.