Digital Millennium Copyright Act (DMCA)[1]: Signed into law by President Clinton on October 28, 1998. I don't care what your politics are but the Democratic party is not the party that wants to stop the Republicans[2] from shutting down the Internet as we know it. Most people on HN probably think they do, however.
For all the blather that gets thrown around about the DMCA, the safe harbor provision is what basically allows a large number of the biggest sites on the internet to operate. Do you think we would have a YouTube without it?
If the porn is copyrighted then the DMCA will allow the content owners to send a DMCA notice for each copyright infringement. That's the law and now you know it.
[1] https://en.wikipedia.org/wiki/Digital_Millennium_Copyright_A...
[2] This presupposes that the Republican Party want to shut down freedom on the Internet.