In Denver, in cities across the nation including Washington, D.C., and all over the globe, protesters marched for women's rights, health care and equality Saturday.
Civic Center in downtown Denver was packed with demonstrators looking to make the statement that "all people deserve to be a part of our society," as protester Adrienne Mann put it.
"I want all people to feel included," she said. "That's what I care about."
Mann, along with five generations of women in her family, including her mother and grandmother, was among the throng that marched through Denver. Their message to the newly sworn in president?
"Don't take us lightly," said Stephanie Wilson, Adrienne Mann's mother. "He's here for four years, we're here forever. We're taking care of our future."
Women’s health is the central theme of the marches, but they've also been billed as a march to stand up for marginalized citizens. That's something that struck close for Ali and Kenya Darhumb, a newly-married biracial couple living in the Capitol Hill neighborhood of Denver.
Both were involved in protests after Trump won the election. Ali felt fear in the outcome in November, but said she found love and support in those marches. That's why they came out to the Saturday women's march.
"I'm here because I think that in this time right now we need humanity more than ever," Ali Darhumb said, fighting back tears. "This many people coming together, to support one another, to raise our voices, I don't think there's anywhere else to be in the world right now."
- More Via NPR: Snapshots From Women's Marches Around The Globe
Figures from transportation officials in Washington D.C. suggest more people may be on the National Mall for the women's march than for President Donald Trump's inauguration. As of 11 a.m. eastern Saturday, 275,000 people had taken trips on the city's subway system. On Inauguration Day, 193,000 trips had been taken as of that time. In addition, some 1,800 buses were registered to park in the city, and Greyhound reported adding more buses from New York. Commuter trains also boosted service.
Back in Colorado, as a measure of the crowd size, The Denver Post reported that organizers estimate the crowd was more than 100,000 strong.
"Knowing that this many people, all are here to stand up and say 'we support you, we welcome you, we are with you,' it's just a really powerful feeling," Ali Darhumb said.
That's the message that many of protesters hope to deliver to the new administration. Darhumb specifically wants President Trump to know "that we're all together."
"That we're watching, we're paying attention, we're aware, we're here, we're not going away," she said. "That we will fight."
The Associated Press, along with CPR Reporters Vic Vela and Nathaniel Minor contributed to this report.
Editor's Note Jan. 23: This story was updated to clarify the characterization of the crowd estimates as reported by The Denver Post.