No matter how you feel about copyright you do need to under what you can and can't do in a public space like a video web host such as YouTube.
You can't say that YouTube doesn't have a stake in this topic. They have spent millions of dollars against mainstream media companies defending themselves against copyright claims and infringement charges generated by their users.
Still, ignorance of the law is no excuse. Not with the amount of under employed lawyers romping around. Don't assume you know (okay, the copyright lawyers are excused) and just watch the video.
For the other copyright resources mentioned in the video visit the original link for the video and click the About section.
Other Posts of Interest