Jason points us to the news that, once again, someone who doesn't own the copyright to something has sent a DMCA takedown on a YouTube video. The link doesn't fully explain the situation, which is explained in the following video:
But, basically, someone used a video to respond to a guy from the Discovery Institute concerning a recent appearance he made on Fox News. The Fox News video is Fox's copyright. Yet, the Discovery Institute sent the takedown notice. Furthermore, the use of the video (even if Fox had sent the takedown) is almost certainly fair use. It was used for commentary in a non-commercial manner. The last time something like this happened (quite similar, actually) the EFF got involved, and forced the false DMCA issuer to rescind the DMCA notices, take a copyright law course and issue a public video apology.