I can never understand the urge to ban books, ideas, political ideologies, and similar. It strikes me as beyond bizarre. Even if you trust your government to be good and efficient as possible, how could you possibly feel that it's ok for someone else to decide what you can read, what you can say, what you can believe, and what you can espouse?

I think the people who argue for that are either in power, believe that their ideology is beyond reproach, or have not thought through the implications of it.