"What is Libertarianism?"

Libertarianism is an ethical philosophy that holds to the non-aggression axiom.

When libertarianism is applied to the realm of politics, it maintains that the role of government should be strictly limited to the protection of the life, liberty and property of people (individuals and collections of individuals), although other libertarians like Murray N. Rothbard would later go on and argue that any form of government action is inherently coercive.