Social entropy

Basic definition:

A measure of the natural decay of the structure or of the disappearance of distinctions within a social system. Much of the energy consumed by a social organization is spent to maintain its structure, counteracting social entropy, e.g., through legal institutions, education, the normative consequences or television. anomie is the maximum state of social entropy.

http://pespmc1.vub.ac.be/ASC/SOCIAL_ENTRO.html

I also found an interesting paper on it and how it relates to the 2nd law of thermodynamics.