"Think the fact that a book is a classic or widely respected grants it protection from book banners? Think again." (from the 'Progressive on the Prairie' website)
These are 43 'best' novels on the famous Radcliffe list that also happened to raise the ire of banners. The books are ranked here in the same order as on the aforementioned list.
The full title of the Radcliffe list is "The 100 Best English-Language Novels of the 20th Century".