Well, but then Harry Potter is a problem for all grades, not just first, and should be on a "parent permission" shelf. Mind you, I feel this is an insanely slippery slope. The number of kids' books with "occult" elements is huge.
It's not so much a slippery slope, because the real problem is the fact that Harry Potter teaches children
how to do real magic.
Yes, an adult told me this with a straight face.
I've validated it up to a certain point, too, because with a swish and flick of a treat, my dog will levitate onto his hind legs.