The heck are you talking about? Free country? This is a free country…he bought a ticket to fly…and its also a free country when the company he bought it from said nope, not today for whatever reason we deem necessary because you signed a contract when that ticket was purchased and was part of the fine print. He exercised his right not to leave…so United chose to exercise their rights and remove someone trespassing on their property. If you start poking holes as to when and where a contract is null and void…then its worthless for everyone.