Freedom is having nothing left to lose, to steal a line from Janis Joplin.
Seriously though, freedom is relative, like many people ^ up there said first. We cannot violate the natural laws of the universe, so free will in that regard is impossible. Freedom is a choice, and a privilege.
In my job, those of us that man the gates are free to do our job as we see fit, as long as we remain within the constraints of the rules of the site. Some guards are very professional and business-like when dealing with everyone. Almost as serious as a policeman taking down evidence at a crime scene.
Myself, I have worked both sides of the guard shack, and there has always been a tenseness between truck drivers, and security guards. Both are just trying to do their jobs, and sometimes, they can come to opposing viewpoints. The truck driver just wants to deliver his load and get to his next stop, while the guard wants to be sure the trucker is following the rules, has the correct paperwork, and gets in to deliver and then gets out in a timely manner. Some guards look down their noses at truck drivers, as if they are somehow beneath their respect. Some truckers look at guards as rent-a-cops and arrogant boys playing soldier.
When I drove a truck, I knew some guards that I hated because they were egotistical bastards. As a guard, I get truckers that seem ready for a fight, as if I am going to be a jerk to them.
I try to walk a middle line, treating the drivers with respect and friendliness as long as they understand I am only doing my job, just as they are, and everyone will be better off if everyone follows the rules.
Sorry to get off track, but as I said earlier, freedom is about choices, and while you can’t choose to do anything you like, no matter what, you can be free to choose how you interact with those around you.
Freedom is also a privilege, because if you violate the rules or laws, of the land, or of the government, you can lose your freedom. Seems readily apparent, but if you lose your temper and kill your neighbor because he is doing you wrong in some way, you lose your freeedom when you go to prison. I suppose this all seems sort of naive, but this is a difficult question, and I answered it to the best of my ability.
Sorry for writing a novella as an answer. :^)