Lethos said:
Animal Farm is on the banned book list? That's weird. Here in the UK it's one of the books on the syllabus for English literature.
I had to read it in school as well, and I'm in the US.
A lot of the banned books (though not all) were pretty much banned by left wing crusades, though there are a few the right wing has gone after as well. In general books do not stay banned in the US due to our free speech laws. "Tom Sawyer", "Huckleberry Finn" and other books have been in trouble due to their allegedly racist portrayals of groups like blacks and indians.
"Animal Farm" is pretty much a slam on socialist idealogy, which can also be applied to the US. The entire "All Animals Are Equal" thing being rapidly undermined by one kind of animal that winds up being smarter than the others, taking control, and ultimatly exploiting the rest. While it can be applied to Russia, it can also be applied to a lot of general left wing idealogy and be seen as sort of reinforcing the perception that some are indeed better than othrs, after all the failure of the farm was that all animals were NOT equal, apply that to
a racial analogy and raise questions about how things could be avoided, and well, you can see why it's been the recipient of a lot of criticism.
That said, reading books from the banned list doesn't really mean much when the books aren't currently banned where you are (and to the best of my knowlege, none of the ones mentioned currently are).
When it comes to "Twilight" I suppose I can see the school's point in regards to the increasingly insane policies preventing contact and affection between the genders and such. I'm one of those people who favors sex education and distributing condoms and contreceptives, but right now the general run of school policies don't favor my point of view. As a result I can see why a book series showing a pair of hands clasping an apple (the forbidden fruit of mythology) might hit the 'no-no' list. Don't be shocked though, you can get expelled for having something with a picture of a gun on it in some places. The policy is insane, but I at least understand it.
While something of a political minority on these forums, I will say that if your sister is interested in this kind of "stories as social theories" thing beyond just trying to engage in rebellion (badly) I recommend reading Kurt Vonnegut, Asimov's "Foundation" series, and pretty much anything by Heinlan from the beginning or middle of his career. All of which heavily shaped how I think today.
At any rate, you'll find that most books that wound up getting banned for a while did so due to accusations of hate speech and promoting racism, or anti-family messages (on respective sides of the coin), at least in the US. Likewise there has been a bit of backlash against the right that has been going on longer than most people realize, and pretty much anything critical of left wing politics has been under fire for decades now. To be fair though there were laws at one time that prohibited the transport of communist propaganda, which lead to other kinds of bans (in the other direction) when he did "TV Nation" Michael Moore did a parody of this by driving a trailer truck painted with a russian flag around, full of commie propaganda, and reading it in truck stops and such to see if anyone noticed or cared, because I guess there were still some laws about it in some states.