Banning books is further proof of how far we / society have not come. Banning means that you fear something you don't understand or something that's different from you, right? And in this day an age when we seem to accept (we've a long way to go, obviously, but we're supposed to be closer now than we were a hundred years ago!!) more and more, it's just a crushing blow that something like To Kill a Mockingbird could be banned.

Do they ban books on the same crazy level in UK as they do in the USA?

If you check out Mein Kampf in the USA, they put you on a list. Just sayin'.