Wow.
Such a chance here for an important debate, and yet so much tit-for-tat (no, YOU answer MY question, MY point is this, I won't respond to other points
)
Here a few thoughts from a liberal Christian lit. geek.
Antriam's point that a Christian's time is better spent serving his "least brothers" is well taken and should be emphasized.
I'd also like to emphasize, not as a Christian but as a Tolkein fan and lit. teacher, that LOTR is NOT an allegory. Tolkein went to great lenghts to make this point in numerous interviews and reflectinos on his work. As has been pointed out here, he made this criticism of Lewis's Narnia. Allegories, Chrisitan or otherwise, tend to be a bit reductive and ham-handed. LOTR is far more than an allegory--though is does have some Chrisitian, Arthurian and Celtic background of course. This is nit-picky, I realize, but that's what fans do I guess.
Finally, do these folks have the legal right to burn books? Well, yes, I suppose so, just as flag-burners do. Basic rationality, though, suggests that putting $ into JKR's pocket is self-defeating. Just as it suggests that not being able to see the basic logical contradictions that BVS has aptly noted is childish. So too is judging a book that one hasn't read (just common sense here...the book is sinful, no...why would they read it?)
And regarding Nazi comparisons, it is totally legit to recognize the historical FACT that 1. these folks are burning books and 2. Nazis did as well. If they wish to avoid Nazi comparisons, they should choose another method. It's also legit and even wise to note that such legal yet fanatical actions are how things like the Holocaust begin. Now, do I think it's likely at all that such book burnings here will lead to a holocaust against non-Christians (or "bad" Christians). Not at all--happily, these book-burners are in the fringe minority, and to argue that one WILL lead to the another is the slippery slope fallacy. But noting potential early warning signs of a potential violent conflict is valid IMHO.
Anyway, my thoughts.