In his provocative and closely-argued book, The Road to Serfdom, Austrian economist Friederich Hayek lays out and defends his thesis that the logical and unavoidable end of collectivist economic systems is totalitarianism. This is so, in a nutshell, because such systems require centralized economic planning which, if it is to be effective, will require the acquisition by the State of more and more power over the lives of individuals until eventually liberty is extinguished.
While it is certainly true that there has yet to exist a State whose economic and political infrastructure aligns perfectly with Communist ideology, we can certainly see enough of the results of existing collectivist states to, at the very least, lead us to wonder if perhaps Hayek was on to something after all?
Welcome to North Korea is a documentary which won an International Emmy award in 2001 and which shows a, for the most part, unexpurgated view of what life in the North is like under the rule of Kim Jong Il, the current "leader for life". The video is rather long (about 50 minutes), but well worth watching for a reminder of how precious is liberty and why our Constitution and Bill of Rights must be defended from enemies both without and within...
Side Note: the embedded video is hosted at YouTube, but you can find a downloadable copy at Archive.org, which is a veritable treasure-trove of public domain music, videos (including full-length movies!), and other assorted materials.
HT: Positive Liberty