An increasing hostility on the part of the non-slaveholding States to the institution of slavery... They have denounced as sinful the institution of slavery, and denied the rights of property in slaves. South Carolina has resumed her position among the nations of the world.
Original passage & context
"An increasing hostility on the part of the non-slaveholding States to the institution of slavery [...] have denied the rights of property established in fifteen of the States and recognized by the Constitution [...] they have denounced as sinful the institution of slavery [...] the State of South Carolina has resumed her position among the nations of the world, as a separate and independent State."
Four days after the terse ordinance (se-011), the convention issued its manifesto — and named the cause plainly: Northern hostility to "the institution of slavery," broken fugitive-slave obligations, and "the right of property in slaves." The document that says the quiet part out loud. Non-contiguous sentences from the one text joined with [...]; verified against the Yale Avalon Project.
Read it in the original — Declaration of Immediate Causes, Dec 24, 1860 ↗