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Throughout the series a constant theme is the almost criminal incompetence of the Ministry of Magic. We are told at various stages throughout the book that some of Voldemorts followers managed to escape justice by lying to the courts that they were controlled by the Imperius curse. However, in book four it is revealed that there is a potion which forces the victim to tell the truth. Why, therefore, didn't the Ministry use this potion on the defendants to find out if they were really controlled or not? This would have led to their imprisonment, preventing them from assisting Voldemort to return to full strength. The use of this potion would also have allowed the Ministry to find out about Peter Pettigrew's betrayal, perhaps leading to his arrest and preventing him from assisting Voldemort to regain his strength (Pettigrew was the man who found Voldemort and nursed him back to a state of health from which it was possible for him to prepare for his rise to power). It is possible that J K Rowling had not thought of this potion at the start of the series, causing her to introduce a near Deus-Ex-Machina miracle on behalf of the evil side.

Throughout the series a constant theme is the almost criminal incompetence of the Ministry of Magic. We are told at various stages throughout the book that some of Voldemorts followers managed to escape justice by lying to the courts that they were controlled by the Imperius curse. However, in book four it is revealed that there is a potion, know as Veritaserum, which forces the victim to tell the truth. However, just like the imperius curse, it is possible for a person to resist the potions affects. Especially if they know beforehand that this potion will be given to them. Veritaserum is similar to a polygraph in it's unreliability. Thus, this "literary criticism" is moot. ref>http://harrypotter.wikia.com/wiki/Veritaserum</ref>

==Notable Ban Attempts==

==Notable Ban Attempts==