The only thing they have in common is their lack of belief in government. Completely independent libertarian organizations work together without conflict. They are proud of the diversity of personalities and lifestyles within the movement. They are firmly and adamantly nonviolent. They believe they represent the mainstream, that most Americans are libertarians who just don't know it yet.
Libertarians believe the most in human goodness.
Libertarians believe that humans are so good that they don't need to be controlled by a government. We believe the laws designed to compel people to be good are unnecessary. The common people with their common wisdom will handle their own affairs far better than any law could dictate that they must. Libertarians believe the least in human goodness. Libertarians believe that people are too evil to be trusted with the power of government.