Women's March - January 21, 2017 - NYC.
The Women's March was a worldwide protest on January 21, 2017, the day after the inauguration of President Donald Trump.
Between 3,267,134 and 5,246,670 people participated in the marches in the U.S., approximately 1.0 to 1.6 percent of the U.S. population. It was the largest single-day protest in U.S. history.