Let It Bleed: Libertarianism and the Workplace/Preservation

This notion, that the preservation of freedom sometimes requires the restriction of freedom, may induce incomprehension or apoplexy in the libertarian—but it should not. After all, [minarchist] libertarians are themselves committed to such a thought in their basic justification for the state: the coercion of the state frees people from the “wild” coercion of lawless individuals.
Chris Bertram, "Let It Bleed: Libertarianism and the Workplace"