Earlier in this thread someone mentioned the hostility that the christian fundamentalists have towards this series because it contains witchcraft. I hear that around here; that witchcraft is a religion and the books promote it. The only problem with that view is that there is no such religion mentioned in any way in the books. In fact the only mention of religion of any kind is Christmas.
I don't have a problem with people arguing abut the content of a book but I do have a problem with them arguing over the content that isn't even there. For example, when people argue about Huckleberry Finn. Some people say "They use the 'N' word too much and I don't want my children exposed to it." Other people can say "It is art and that is how people talked in those days." I come down on the art side of this question but the argument is about what is actually in the book. The Harry Potter hysteria isn't even about what is actually there.
I also noticed that these same people who want Harry Potter off the school shelves didn't say a word about Grimm's Fairy Tales, LOTR, etc. I'm thinking it is the popularity of the books and fear rather than the actual content.