Yeah. A couple of "timeless" quotes by the propertarian Murray Rothbard:

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.

We must therefore turn to history for enlightenment; here we find that none of the proclaimed anarchist groups correspond to the libertarian position, that even the best of them have unrealistic and socialistic elements in their doctrines...we find that all of the current anarchists are irrational collectivists...We must therefore conclude that we are not anarchists, and that those who call us anarchists are not on firm etymological ground, and are being completely unhistorical.

They knew damned well what they were doing. At least Rothbard didn't fully accept the appropriation of the latter term, even if others from his shitty movement have since then.