Idiot.
What do you think McDonalds would do to an employ who took it upon himself to pass on his “Political Wisdom” to customers along with their order and their change?
He would be canned.
Does that make him property. NO. It simply means that employers can set rules of conduct.
In a way I guess but its more like indentured servitude. You enter into an agreement VOLUNTEERALLY.
You can quit any time you snapper head and then you can be "Free at last."