Beck rally only drew 7,000 people

Resident MSNBC genius came up with this determination.

 87,000 people per CBS, since this is the lowest number anyone made up.
-80,000 people he claims would have been there anyway.
    7,000 people there to attend Beck’s rally.

And people wonder why the MSM has zero credibility. BTW it seems O’Donnell is saying only white people visit the National Mall.