Banning any book, TV Show, Movie, etc. Is usually bad. IMO, the only good reason to ban something is if it is intended for a certain target audience, but has a certain amount of content not suitable for such intended audience, that its impossible to edit out the inappropriate content, and still have it at the same level of understanding.
Banning things because they may generally dislike it is complete bullshit. There are no exceptions for this one. If they don't like it, then they shouldn't read/watch/listen to it. No ones forcing them into it. It's unfair to take it away from everyone. Doing so just shows how much of a selfish prick you are.
And trying to ban things that aren't suitable for kids, even though they're not supposed to be, just shows that the people that are trying to ban it, are completely disregarding the intended target audience of it. It's not gonna work, ever. If you don't want your kids watching it, then its your responsibility to not let them watch it.