Okay, right off I'm going to offend some people by saying that I think some books ought to be banned. We are a reflection of our thoughts, and if our thoughts are bombarded by dark and twisted material, it stands to reason that we lose a little bit of goodness and human kindness. I don't want to read a book about some psycho who brutally tortures a young woman, leaving her family to grieve forever. I'd rather read about someone who loves enough to make true sacrifices for his/her loved ones.
That being said, the first amendment to our constitution grants freedom of the press, and I'd never change that. If we prohibit free expression, our democracy crumbles and freedom is lost.
I took a look at some of the books that were on the banned list in recent years, and I've read some of them. Stephenie Meyer was banned, and I like her Twilight books. Huckleberry Finn was banned, and I understand why, but it was a contemporary reflection of Southern culture at the time it was written, and I think it should be seen as such. And I'll never understand why anyone would want to ban To Kill A Mockingbird. The writing is excellent, and the message is conveyed loud and clear without any undue preaching.
To wrap it up, I'd say that we should let our own morals and values be our guide when it comes to banned books, and even though young people may disagree with me, I think parents have a responsibility to their children to make sure they aren't reading something that might ultimately be harmful to them. If it violates your beliefs you'd do well to stay away from it.