More reading material: FBI's declassified "The Vault" [Links]

Not every FBI investigation begins with a suspicion that the luminary in question is up to no good. In many cases, cultural figures received threats (usually extortion-related) from mysterious parties and called in the FBI to, well, investigate. As with any tool in human hands, nations can use their investigation organizations for good, or for, shall we say, more ambiguous purposes. Whatever their aims, they do produce fascinating reading. [via Open Culture]