All we are saying... is give math a chance
Aerial photography was used to accurately measure the croud size at the anti-War demos. The number originally reported to be 200,000 - 250,000 people protesting in San Francisco was actually... 65,000.
I still remember going to a Dukakis rally at Justin Herman Plaza where the article in the afternoon edition paper about it was on the newsracks before it was over, reporting a huge number of attendees... the same electoral tidal wave that carried him to the White House. There was no way that the story could have been written after the rally had started. That was when I learned that the estimates in newspapers are, essentially, crap.