Ban on books?

Let's take a minute to discuss censoring and banning. To censor something is to remove an material the censorer deems inappropriate, such as language, violence or death. Some companies try to censor a book before they flat out ban it. What got me thinking about banning and censoring and what not was when I read an article on how a school banned The Fault In Our Stara by John Green. The Fault in Out Stars is one of my favorite books so I was sad to see that it was banned. There are some books that I believe should be banned or taken off of print even! But The Fault in Out Stats is not one of these books. Yes it does contain some adult material such as language, death, and sex. So yes I do believe it is a book for mature readers. But there is no cause to ban it.
The school it was banned from was a middle school so the readers would be at a younger age, but I believe it is up to the parents of said children to determine if their child is mature enough to read the book. The Fault in Our Stars contains many amazing messages about life and love. So maybe some thirteen year old children shouldn't be allowed to read the book yet. The key word there is yet.
I think what banning comes down to is protection and sheltering. One of the reasons the middle school banned the book was that is contained death. Wait a minute. This school is sheltering their children from death. They know that death and cancer and deises are a part of life right? Sure we don't need to over expose our children to the realities of the world at such young ages, but they do need to learn to accept it. Death and diesels and trails are things that we are all going to experience in life. As much as we wish our lives were Disney movies, they aren't. (Don't get me wrong I love Disney just as much as anybody else. If not more.)
I believe books like The Hunger Games, Divergent, The Maze Runner and Fault in Our Stars should be reserved for more mature readers,  but they should not be banned. And it's the parent-child relationship that needs to come to the conclusion on if the child should be permitted to read the book, not the school district.
The books we've discussed are all beautifully enriching to the human minds, but there are some books that are harmful to the intelligence of humanity. These are the kinds of books that should be banned. Actually they shouldn't have been published in the first place. But books that fall into this category are far and few. But they are there.