Everywhere you go, people are talking about yesterday’s Women’s March on D.C. Is there three times more talk about Marching Women than the Presidential Inauguration? No one knows. But crowd scientists have established that three times the number of people attended the Women’s March than attended the President’s Inauguration the day before.
— Women's March (@womensmarch) January 22, 2017
The NYT article linked below explains the methodologies that crowd scientists use, and includes validating photos and charts.
Crowd Scientists Say Women’s March in Washington Had 3 Times More People Than Trump’s Inauguration | The New York Times
“The women’s march in Washington was roughly three times the size of the audience at President Trump’s inauguration, crowd counting experts said Saturday… ~ Tim Wallace and Alicia Parlapiano
While we’re on the topic of crowd size, were the Obama/Trump Inauguration photos “doctored?” According to the evidence provided in this NYT article, no. Both of the famous photos were taken 45 minutes before the 2009 Obama and 2017 Trump inauguration speeches began.