“One gratifying aspect of our rise to some prominence is that, for the first time in my memory, we, ‘our side,’ had captured a crucial word from the enemy. ‘Libertarians’ had long been simply a polite word for left-wing anarchists, that is for anti-private property anarchists, either of the communist or syndicalist variety. But now we had taken it over.”
— Murray Rothbard
and hell the word libertarian only was created because it became illegal to print anarchist literature in France in the 19th century.