womens march

Specators watch as performances are given celebrating phenomenal women on international women’s day. (Tessa Westlund)

House Representative Angela Romero addresses the crowd at the Women's Wave Rally. (Lexie Flickinger)

Thousands of people attend a women's march on the Capitol in Salt Lake City, Monday, Jan. 23, 2017. The demonstrators in Salt Lake City hiked a steep hill in heavy snow and wind Monday afternoon before pouring into the capitol, packing its three main floors, hallways and staircases amid speeches and chants from activists and a few Democratic lawmakers. (Steve Griffin/The Salt Lake Tribune via AP)

At least 3.3 million people attended Women's Marches around the U.S. after President Donald Trump's inauguration, according to data collected by Erica Chenoweth at the University of Denver and Jeremy Pressman at the University of Connecticut.

Wendy Shelton, center, from the Center for Pregnancy Choices listens to speakers at the March for Life at the Utah State Capitol with her grandchildren. (Katelyn Kenedy)

Thousands of people march to the Utah State Capitol on Jan. 23, 2017. Many marchers gave different reasons for participating, but reported feeling a sense of unity. (Sarah Christensen)