I thought the visuals were good, I also struggled with the audio - the mixing levels were bad.
My thoughts on part 5.
1) anarchy does not = bloody chaos, both private security organisations and law courts are possible. Example, the ancient Irish libertarian society http://www.youtube.com/watch?v=ZZi45Mf6jYY.
2) The US constitution as a social contract has already been picked to pieces and is obviously a failure in limiting the state.
3) How one can pick to pieces the lack of principles in governmentalism and then conclude a small one is desireable makes no sense.