The views of the US Libertarian Party are essentially summarized by "taxes and regulations are bad" with few other guiding principles. As a party, it is largely separated from any sort of political theory (even libertarian political theory), and sort of relies on a politically disenaged and uninformed populous who vote for the people promising lower taxes and legal weed without really understanding that the Libertarian Party's approach to "taxes and regulations are bad" are primarily in favor of large corporations rather than individuals. They posture themselves as a true alternative to the Democratic and Republican parties when practically they want most of the same stuff Republicans want for the most part, with token acceptance of progressive social ideas.

Libertarianism more broadly is an ideology that believes that individual rights are the most important thing to creating a better society. This can be left wing (extending individual rights to include things like the ability to use land and other natural resources without being limited by property ownership) or right wing (believing that the right of the individual includes the right to accumulate wealth and power through accumulation of capital), and the distinction primarily depends on the approach to ownership and property. Libertarianism differs from Anarchism in that libertarians believe that a state is required for maintaining and guaranteeing individual rights through the use of laws and courts, and defending those rights from external threats via military action.

All in all, my personal view is that libertarianism, along with anarchism and other "min-archist" movements, is unable to answer the question of "how do you prevent someone from accumulating material and social power and using that power to enforce their will upon others?" For many libertarians the answer seems to be that social norms in a libertarian society would prevent people from doing this and that they would be able to withstand external attacks from groups that do not hold their views. I do not believe this, and I think that human nature means that some people will always want to gain control over others through whatever means they can, and that only a government can effectively combat these tendencies. Social norms are powerful and are a required part of a functioning democracy, but ultimately the law, backed by the ability to apply the use of force in a way agreed upon by the public, is what allows the weak to resist domination from the strong.