Banned Books Week. Why do libraries celebrate it every year? It's about the freedom to read. Every American has the right to read what he or she wants to. In this day and age, censorship can run down a slippery slope. In other words, if one book is banned, why not another? And another? Soon, banning books and other forms of censorship would run amok in our society. The rights guaranteed to us under the 1st Amendment are part of what makes America great.