Let It Bleed: Libertarianism and the Workplace/Preservation
From Critiques Of Libertarianism
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"