People defend their oppressors every day, in every culture. Stockholm Syndrome is the rule, not the exception.
[1] http://en.wikipedia.org/wiki/Kidnapping_of_Jaycee_Lee_Dugard
All governments function on the basis of active citizen cooperation. If citizens don't cooperate, no government can stand.
Maybe what we call Stockholm Syndrome is just a more pronounced pattern that makes possible all of the social control structures that we take for granted all around us every day.