Men were created to be free. This was man's natural state. But, man was not satisfied to be free. He must organize and structure his environment to best suit himself, to dominate others, nature and his social environment.
Men are now doomed to government's demands, and limitations upon choice. Men are doomed to serve instead of dominate. This and is the state of slaves under tyrants, dictators, Kings, "gods", systems, governments, laws, and nature, herself. Men are limited by such things.
So, man's need to dominate was his very enslavement. He organizes only to serve himself. He structures to form his understanding, so he can control others. And, so, all men are now enslaved.