Another point of interest, the National Park Service broke a 13 year policy of NOT reporting crowd size just to report on the 2009 inauguration crowd size. (The USA Today image I posted earlier.)
This link is broken, either the page no longer exists or there is some other issue like a typo.
Now they have decided to return to the policy of not reporting, why do you suppose that is the case?
Also, the MSM would run stories for weeks ahead of any proposed previous marches/demonstrations but chose to ignore this one.
Blast from the not so distant past : http://www.washingtonpost.com/wp-dyn/content/graphic/2009/01/19/GR2009011900114.html