Unfortunately Libertarians suffer from the abject stupidity of "libertarians"

Very few of us have read Locke and Through and run on the ideals of the Non Aggression Principle but we do exist.

Simply stated if you're arguing with a "libertarian" And their point of view would be an attack on another person or group or a trespass on another's rights they're probably not a libertarian.

The purpose of government is the monopoly of violence. Ideally this violence should only be used to protect rights and not violate them. Unfortunately it is often the case that government violates rights. Libertarians do not like that.

El libertarian society is a trust based society strengthened by voluntary engagement. In short you're allowed to sell poison if you label it as poison but you're not allowed to sell medicine that is actually poison.

Unironically Ron Swanson is a pretty apt description of accurate libertarian philosophy.