Can you please explain how and what violence there is in a libertarian society?
A society of capitalists without any regulating government and system of laws to keep them from kidnapping and murdering each other for the sheer value of their internal organs?
That's a nightmare world of the darkest order.
Libertarian/Objectivist thinking in no way precludes or forbids law and order.
What you described would be what most people call Anarchy.