An common, but unproven claim, which also confuses content creation with distribution. It's the monopoly over the latter that I and many others object to. We are currently seeing the beginning of an era where sharing and remixing is giving rise to an unprecedented number of new art and culture. It has never been easier to produce content.

>It is a time-limited monopoly designed to promote progress in science and arts.

Though I'm from Europe, I'm quite familiar with that phrase, and I don't buy it. The problem with it is that it's from a time where the copyright industry was, to a certain degree, necessary for the dissemination of content. The founding fathers could have never even anticipated something like the Internet and technological advancements like BitTorrent and other file-sharing services, which pretty much invalidate a lot of the assumptions made when the constitution was written.

Also, as far as I remember, copyright is merely something congress is allowed to make laws about, not a constitutionally granted right.