Office for Intellectual Freedom (OIF)

The American Library Association's Office for Intellectual Freedom tracks book challenges and censorship attempts in libraries, defining a book challenge as an attempt to restrict access based on content. Their data, though not comprehensive, is vital for identifying trends in challenges, understanding reasons, and advocating for free speech.

Streisand Effect

The Streisand effect refers to the unintended consequence of trying to suppress information, which leads to its wider publicization. Examples include attempts at censorship, privacy protection, litigation control, and public relations management. Notable instances include the Church of Scientology's video, China's censorship of #FreeTibet, and Wikipedia's Pizzagate article. These cases underscore the difficulty in suppressing information.