1. Different plots engage the same question/issue.
One of the most prevalent issues in the Harry Potter series is the issue of prejudice. Audiences first encounter it through the Dursleys and their treatment of Harry. Because of Harry’s magical parentage, the Dursleys malign and mistreat Harry. Ironically Harry’s other main antagonists, Voldemort and his followers also begrudge Harry because of his heritage, but in their case they feel that he is “not magical enough”, since he is born of a muggle born wizard (his mother).