In "Harry Potter and the Philosopher's Stone" prejudice plays an iportant role in the story.

Prejudice occurs throughout this series. Harry's aunt and uncle are prejudiced against wizards and witches. Magical people consider non-magical people or "Muggles" as being a little lower than them. Centaurs do not like humans. Hagrid mentions Dumbledore is not prejudice against giants. Draco has prejudice against muggles and even other wizards. A sense of prejudice in the magical world mirrors the "real" world.