In August 1963, Martin Luther King Jr. delivered his "I Have a Dream" speech on the National Mall. Two days later, FBI Domestic Intelligence Chief William Sullivan wrote a memo designating King "the most dangerous Negro of the future in this Nation from the standpoint of communism, the Negro and national security." A massive surveillance operation was approved. FBI Director J. Edgar Hoover became personally fixated on proving communist ties and discrediting King. The surveillance failed at its stated purpose. It produced no evidence of communist affiliation. What it did produce were recordings of King's extramarital sexual encounters — material entirely unrelated to any legitimate security concern. The operation had quietly shifted from intelligence collection to opposition research against a domestic political figure. Sullivan then had FBI lab technicians prepare a package of the sex tapes and sent them, along with an unsigned letter, to King's home. The package was opened by King's wife, Coretta Scott King. The letter called King "an evil, abnormal beast," mocked his Nobel Prize as "a grim farce," and declared: "King, I repeat you are done." It closed with a thinly veiled demand for suicide: "There is only one thing left for you to do. You know what it is. You have just 34 days." The letter writer attempted to disguise the source by adopting the voice of a black American — "you know you are a complete fraud and a great liability to all of us Negroes." King and his advisers saw through the deception immediately, concluding the letter came from the FBI, as Yale historian Beverly Gage documented when the unredacted version was unearthed and published in the New York Times in November 2014. The structural pattern here is worth naming precisely. A surveillance apparatus authorized under one rationale (national security, communism) collected material under that authority, found nothing supporting the rationale, then repurposed the collected material for an entirely different objective (personal destruction of a political figure). The cost-bearer was not only King but the democratic system itself — the surveillance state operated without meaningful oversight, and the target had no recourse. King did not back down. But the episode exposes a machinery that is not self-limiting. No internal mechanism stopped Sullivan or Hoover. No external check intervened before the letter was sent. The operation was revealed not through oversight but through historical research, decades later. The unredacted letter only became public in 2014 — fifty years after it was sent. The question this raises is not historical but structural: what prevents the same pattern from operating today? Surveillance capabilities have expanded by orders of magnitude since the 1960s. The mechanism — collect under one authority, repurpose for coercion — requires no technological sophistication. It requires only the absence of accountability.