Objectivism & objective law?

100% objective law is impossible because there haven't been are will not be 100% objective people.
Quoting Mrs. Rand: "Contradictions do not exist." , "The basic political principle of the Objectivist ethics is: no man may initiate the use of physical force against others." , "a government holds a legal monopoly on the use of physical force". There's a contradiction.
In terms of metaphysics, epistemology, ethics and aesthetics she is right.
I suggest: link