I don't know since I don't know much about this law. For instance, there are a lot of the Simpsons clips at youtube, which I think are illegal, but again, I don't understand youtube's rules completely.
To me, when a station broadcasts their shows like the Simpsons, South Park, or anything like these, they have to buy the right to broacast them if those are re-runs. Or they have to buy the clips, I don't know. The bottom line is they cannot do it for free even if they have the ability to copy the clips from other stations. It's illegal to do it.
Sometimes, I wonder why those clips at youtube are being treated different. I mean, even what they have there are re-runs and personal redos, but they put those clips for public view. Therefore, they're longer private use. Shouldn't they be viewed and charged with the same rule?