Economic liberty - which is: capitalism - is the inescapable *precondition* for all human rights. To tell a person "You have an unalienable right to your life," but deprive him, by force, of the material means he has earned to sustain that life, is a vicious contradiction. That contradiction of human rights lies at the core of every non-capitalist system in existence.
Human liberty requires one thing only: That individuals be left free of all impositions of force by other individuals or groups of individuals, whether it's an occupying mob of fascists or an established government let out of its Constitutional cage. "Laissez Faire" - "Leave us alone!" was Vincent de Gournay's 18th century answer to pompous bureaucrats asking how they could help the economy improve. The concept is even more relevant today, and will be in every age.