A modest libertarian foundation in one minute.
Words excerpted from Prof. Michael Huemer’s book The Problem of Political Authority (page 177):
Libertarian political philosophy rests on three broad ideas:
(1) A nonaggression principle in interpersonal ethics. Roughly, this is the idea that individuals should not attack, kill, steal from, or defraud one another and, in general, that individuals should not coerce one another, apart from a few special circumstances.
(2) A recognition of the coercive nature of government. When the state promulgates a law, the law is generally backed up by a threat of punishment, which is supported by credible threats of physical force directed against those who would disobey the state.
(3) A skepticism of political authority. The upshot of this skepticism is, roughly, that the state may not do what it would be wrong for any nongovernmental person or organization to do.
Chapter 1: http://spot.colorado.edu/~huemer/book3.htm
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Peace Requires Anarchy 