Our lives and characters are a result of all kinds of influences that mold us and/or distort us -- and "our thinking" may not even be our own as much as a collective of one influence or another.
Our liberty is also based on all kinds of influence and circumstances. We can try to be as free-thinking and free-acting as possible, but we are still products of our environments.
And property...well, to me it seems that we pretty much rent or borrow all that we temporarily acquire. And to be dependent on anything could be seen as being OWNED BY IT. Our thoughts and actions are affected by the things we covet. We build stories around them: our need for them, our "right" to them, our justifications for protecting them, etc.
As a result, we humans end up with giant clashes of stories!