I have never seen an illegal library, have you? Don't try to confuse a respectable institution with pirate web sites that didn't ask permission to anyone to do their illegal thing.
There is nothing illegal about copying per se, as long as there are no provisions against it. This is a basic principle of human society. For example, there is nothing illegal about walking without shoes, as long as there is no regulation preventing it as it's the case at some government offices. Your reasoning is just trying to throw away our society principles to justify your behavior. My main contention is not that we shouldn't have free information, but that it is unethical to disregard existing laws just because you don't like them.
There is nothing unethical in braking the law. It is illegal to disregard existing laws, ethics is a different matter. There were many racist, sexist, oppressing laws in the past that we consider unethical today, and may even celebrate people who broke those unethical laws in protest to authorities and 'the society'.
True, there are situations where breaking the law is the ethical thing to do. However, you are trying to put access to a copyrighted book at the same level as fighting against sexism and racial oppression. Unless you can show that these situations are closely comparable (little clue: they're not), you're just creating an excuse to avoid following laws that don't benefit yourself.
In the case of copyrighted books or research papers, it could be a matter of life and death for the user, if we are talking about access to various types of medical research, for example.
Research papers in medicine are written for specialists, who already have access to them by means of employment. I don't know how access to that literature can save lives otherwise. Even if that was the case, it is a very far fetched way to prove that you need generalized civil disobedience with regard to copyright law.