Part and parcel of the various campaigns being waged to force the US to become a theocratic imposed republic (along the lines of the Roman Empire i would think, if the Christo-fascist vision holds sway) is the tacit support that libertarians afford the conservatives in ridding this nation of those pesky support programs for the desperately poor, the altered abled, and the masses of folks who live in danger of becoming part of the desperately poor. In order for the theocrats to sustain their expansion into all forms of governance, the end of public taxpayer support for aid is singularly important in that it requires those that then need aid to get it solely from faith based charities. Once that is firmly in place, along with parochial voucher education, and other institutionalization of the christo-fascist wing infrastructure, those who choose to not "believe" can more easily be marginalized and removed from the public weal, from the civic society. Thus, when libertarian types argue emphatically for a reduction in such services and programs, they are advocating directly for this shift in the country. They will not be able to have it both ways.
The greatest threat to libertarianism is anarchist, in that the supposed angst about socialism only applies to people with lesser wealth not more. Support exists for the corporate subsidies and tax breaks that further erode the social framework of communities, as well as direct advocation for increasing the presence and size of the police state. Hence anarchists are the last great holders of constitutional liberties among the political spectrum. Eventually chaos will force the issue to the fore, and those who have learned and trained to be independent agents free from the morality of corporate capitalist consumerism as well as any religio-credo constructs will be able to function in a conscious state celebrating their cognitive liberty. That scares the hell out of libertarians as much as all of their conservative brethren. Anarchy is the essence of a fully interconnected social organism of species entwined within an ecosystem of greater and greater complexity. Each operating as an independent agent, whilst fully aware that every action is intricately related to all of existence in each and every moment. The proscribed conscious awareness will only lead to greater autonomy within the forms of total interconnectedness. I breathe in knowing that my air, taken freely and independently with this planet is shared will all life in every sense of the material, the atomic, the sub-atomic, the quantum, the superstring, and the non-material cosmos. How can it be anything other than that. And if each breath is such, then each sip of water and tasting of food, and dream and shit and piss and smile and voice and beat are linked as such as well. I don't need any form of government at all to protect me from BEING.