Feudal/libertarian.
Aren't those two mutually exclusive?
Not in my book. Subjugation is willful (in a perfect feudal society)
one can choose a master, or face the chaos alone.
That's not much of a choice, Die on your feet or live on your knees. 
Except for the knights, no one could choose their master in, for example, the feudal countries in Europe. Sweden was one of the few that didn't have feudalism, though most Kings were practically dictators from the middle age to the beginning of or mid 19th century. "Ordinary people" were extremely poor and powerless.
In the early (purer) periods, one indeed had a choice of whether to surrender their freeholds for protection.
This was not limited to knights, but also to the peasentry. Many CHOSE to be serfs. Later, it became such
an expected situation, that it couldn't really be avoided. Once inheritence got involved, that also screwed the
whole concept.
