Claims that copyright involves human rights or is a property right are based on the theory that copyright is also a natural right -- a right that exists independent of legislative enactment, even if there are legislative enactments. In the United States, copyright is not a natural right, since the Supreme Court has said so twice, first in 1834 in Wheaton v. Peters, and then in 1932 in Fox Film Corp. v. Doyal. Yet, rhetoric based on a natural rights basis for copyright are behind all the claims that those who use copyrighted works without permission are thieves or pirates. If copyright is instead a limited privilege that parcels out limited control to copyright owners, one might view issue differently.
Professor Tom Bell has a draft of a book that takes on these issues and many others, called "Intellectual Privilege: Copyright, Common Law, and the Common Good," available here. There is a lot of good thinking and research, and I encourage others to read it.