Yes. MoveOn is biased.
There is no ranting. It's a video clip from CBS.
The same video clip coming from
http://www.gop.org/ would mean exactly the same thing - Rumsfeld was trying to cover his tracks as quick as possible by avoiding the issue.
This video clip is not an editorial, it's not a ranting, it's not even an article. It's a video clip from CBS. Regardless of where it is.