Its privatized power, trying to break out the containement vessel that is a democratic society. Once it succedds it continues to build little autocratic empires in the host, similar to tumors. The whole libertarian ideolog is just that, the secretions of tumors, trying to convince the host, that this is friendly, normal and actually a net positive growth to the creature being devoured.

Of course the anti-bodies, aka taxes have to be supressed, otherwise the defenses kick and and a normal society returns.