It is obvious for Libertarians that the advancement of freedom requires the reduction of state power. However, many Libertarians consider that liberty requires a wider respect for property rights, beyond state coercion. By examining this assumption from two well-known libertarians, Rothbard and Hoppe, it is relevant to introduce the concept of “domination”, and thus link libertarianism with a theory of power. This helps realistically define the state in a social setting and points to a political definition of freedom.