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Primary sourceLetter16 April 1963

Letter from Birmingham Jail

Martin Luther King Jr. · 16 April 1963

An open letter King wrote in jail in 1963 defending nonviolent direct action and civil disobedience against unjust laws.

King's own defense of civil disobedience, written from jail during the Birmingham campaign.

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A recreated jail cell with pale green painted iron bars and a steel door with a round lock plate. Inside are a white-sheeted bunk bed, a wall-mounted sink, and a toilet on a concrete floor.
Recreation of Martin Luther King's cell in Birmingham Jail, National Civil Rights Museum, Memphis.

About this source

What it is

This is an open letter written by Martin Luther King Jr. on April 16, 1963, while he was jailed in Birmingham, Alabama, for taking part in civil rights demonstrations without a permit. He began writing it in the margins of a newspaper and finished it on paper smuggled to him.

Why it matters

King wrote the letter in response to white clergymen who criticized his methods and called him an outsider. In it, he explains why people have a moral duty to break unjust laws and why he believed change could not wait for the courts alone. It became an important text for the civil rights movement.

Look closer

  • Why might King have chosen to answer his critics publicly instead of privately?
  • What does writing on newspaper margins and scraps of paper tell you about his situation?
  • How does the recreated jail cell help you imagine the conditions King wrote in?

This letter is part of the curated material that grounds the AI version of Martin Luther King Jr. on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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