Summary

John Quincy Adams's "Argument in the Case of the United States vs. Cinque" defends the right to self-defense and freedom from enslavement, positing that the Africans aboard the *La Amistad* were unlawfully held and therefore justified in their violent rebellion. Adams asserts that international law and natural rights superseded Spanish claims to property over human beings, emphasizing the inherent liberty of all individuals. The speech's core argument centers on differentiating between piracy and the desperate act of enslaved people seeking freedom.

Readers gain an understanding of the legal and moral arguments used to challenge the institution of slavery in a landmark case. Key takeaways include the articulation of natural law as a basis for human rights, the legal concept of *jus cogens* (peremptory norms of international law) regarding slavery, and the historical context of the abolitionist movement. The argument highlights the power of rhetoric and legal reasoning in advocating for justice against established power structures.

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Key concepts

Natural Rights — The inherent entitlements possessed by all individuals, independent of government or law, including the right to liberty.
International Law — The body of rules and principles governing the relations between states and other international actors, here applied to challenge property claims based on enslavement.
Self-Defense — The justification of using force to protect oneself or others from harm, central to Adams's argument for the Africans' actions.
Jus Cogens — Peremptory norms of general international law, from which no derogation is permitted, applied by Adams to argue that slavery is inherently illegal and thus property claims are void.