The Women's Marches may have been the largest demonstration in US history

Related Links

●  A Look Back At Other Marches In History, And What They Accomplished (NPR)

●  A brief history of women's demonstrations, from suffragists to reproductive rights

Crowd estimates from Women’s Marches on Saturday are still trickling in, but political scientists say they think we may have just witnessed the largest day of demonstrations in American history.

According to data collected by Erica Chenoweth at the University of Denver and Jeremy Pressman at the University of Connecticut, marches held in more than 500 US cities were attended by at least 3.3 million people.

“Even using a conservative estimate, it was the single largest day for a demonstration in the US,” Chenoweth, an expert on political protests and civil resistance, told us.