Libertarianism is a popular philosophy among free market loving folk in America, especially, but what does the doctrine really mean? Here we have a leading libertarian, Professor Hans-Hermann Hoppe,  sum it all up:

“The theoretical, irrefutable core of the libertarian doctrine is simple and straightforward and I have explained it already repeatedly at this place. If there were no scarcity in the world, human conflicts, or more precisely physical clashes, would be impossible. Interpersonal conflicts are always conflicts concerning scarce things. 
I want to do A with a given thing and you want to do B with the same thing. Because of such conflicts—and because we are able to communicate and argue with each other—we seek out norms of behavior with the purpose of avoiding these conflicts. The purpose of norms is conflict-avoidance. If we did not want to avoid conflicts, the search for norms of conduct would be senseless. We would simply fight and struggle. 
Absent a perfect harmony of all interests, conflicts regarding scarce resources can only be avoided if all scarce resources are assigned as private, exclusive property to some specified individual or group of individuals. Only then can I act independently, with my own things, from you, with your own things, without you and me clashing.”
http://www.vdare.com/articles/hans-hoppe-libertarianism-the-alt-right-and-antifa-a-libertarian-strategy-for-social-change

     Give free market solution to the economic problem, and all will be well. Unfortunately, this school never looks very closely at the financial system and the main reason why there are conflicts of scarcity, namely the deficit in purchasing power, noted by Major Douglas and modern theorists such as Oliver Heydorn, who in numerous books, articles and lectures has most strongly put the social credit case. In short, the libertarians only want to trim around the edges of global capitalism, while social credit believes that a complete spring cleaning is needed: http://www.socred.org

     Oh, there is the issue of the die off of much of the biodiversity of the planet due to out of control capitalist growth, that which the libertarians cannot get enough of:
http://collapse.news/2017-10-19-the-global-ecosystem-is-collapsing-insect-biomass-decline-decimation-pollinators-scientists.html

     That is another small spanner in the works.