“It is good that you enlighten people about Harry Potter, because those are subtle seductions, which act unnoticed and by this deeply distort Christianity in the soul, before it can grow properly.”

Cardinal Ratzinger

Also, the Vatican warned against Twilight and, frankly, I am tired of pointing this evil out to parents who should know better. These tales confuse good and evil. 

Monsignor Franco Perazzolo of the Pontifical Council of Culture, "The theme of vampires in Twilight combines a mixture of excesses that as ever is aimed at young people and gives a heavy esoteric element. It is once again that age-old trick or ideal formula of using extremes to make an impact at the box office. This film is nothing more than a moral vacuum with a deviant message and as such should be of concern."