What is the philosophy of objectiveness of the libertarian movement?
This may be asking about the philosophy of Objectivism. Objectivism is the name Ayn Rand gave to her worldview. Objectivism is an all-encompassing term for Randian ideas, including her politics, economics, metaphysics, aesthics, etc. Ayn Rand advocated laissez-faire capitalism and a strictly limited government. Those are the tenets of Objectivist politics and economics. Therefore, you could say that all Objectivists are libertarians in there politics and economics. It also happens that many, many libertarians are Objectivists. A famous libertarian book from the 1970s was "It Usually Begins With Ayn Rand," by Jerome D. Tuccille. The title alludes to the facts that many people arrive at libertarianism through reading Ayn Rand's novels, especially "Atlas Shrugged" and "The Fountainhead."