Right-libertarians are all sociopaths. No exceptions.

(It's taken me decades to settle on this opinion—I dislike generalizing about groups of people—but there's nothing tentative about it any more.)

@cstross I remember when the word for "libertarian" was simply "selfish". Although it does have the added bonus of meaning everything the believer wants should be untaxed and unlegislated while everything they don't like should be abolished.