WASHINGTON -- Summoned by student survivors of the Florida school shooting, tens of thousands of people poured into the nation's capital and cities across America on Saturday to march for gun control and ignite political activism among the young.
A contingent of survivors of the 1999 Columbine High School shooting was among the thousands of marchers at a gun control rally in Denver.
Students and their supporters packed into Civic Center Park near the state Capitol for a rally Saturday afternoon before spilling out onto streets through downtown. They held signs like "The Second Amendment Needs Amending" and "Prayers are Not Enough."
Sixteen-year-old Columbine student Kalli Honeycutt says her mother, who survived that shooting, has drilled it into her head to always be on the lookout.
Honeycutt says she is demonstrating because she wants lawmakers to make it harder for people to get guns and cause tragedies like school shootings.
Survivors of last month's Florida school shooting have described themselves as the "mass-shooting generation," noting that they were born after the Columbine shooting.
Organizers of the March for Our Lives rally in Washington hoped their protest would match in numbers and spirit last year's women's march, one of the biggest protests in the capital since the Vietnam era and one that far exceeded predictions of 300,000 demonstrators.
Bearing signs reading "We Are the Change," ''No More Silence" and "Keep NRA Money Out of Politics," protesters lined Pennsylvania Avenue from the stage near the Capitol, stretching back toward the White House. The route also takes in the Trump International Hotel.
President Donald Trump was in Florida for the weekend. A motorcade took him to his West Palm Beach golf club in the morning.
Large rallies also took shape in such cities as Boston, Houston, Minneapolis and Parkland, Florida, the site of the Feb. 14 attack at Marjory Stoneman Douglas High School that left 17 people dead.
The police presence was heavy as more than 20,000 people filled a park near the Florida school, chanting slogans such as "Enough is enough" and carrying signs that read "Why do your guns matter more than our lives?" and "Our ballots will stop bullets."
Gun violence was fresh for some in the Washington crowd: Ayanne Johnson of Great Mills High School in Maryland held a sign declaring, "I March for Jaelynn," honoring Jaelynn Willey, who died Thursday two days after being shot by a classmate at the school. A boy was injured in the attack, and the shooter died.
Rallying outside the New Hampshire Statehouse in Concord, 17-year-old Leeza Richter said: "Our government will do more to stop us from walking out than it will to stop a gunman from walking in."
Since the bloodshed in Florida, students have tapped into a current of gun control sentiment that has been building for years — yet still faces a powerful counterpoint from the National Rifle Association and its supporters.
Organizers hope the passions of the crowds and the under-18 roster of speakers will translate into a tipping point starting with the midterm congressional elections this fall.
The protesters, many of them high school students, claim that the youth leadership of this initiative is what will set it apart from previous attempts to enact stronger gun-control legislation.
In Atlanta, Lindsey Alexander, a freshman at Decatur High School in Decatur, Georgia, attended her first protest, inspired by hearing Parkland students debate the NRA on television.
"If nothing changes, we're going to continue to have school shootings," she said. "I understand the Second Amendment is important. We've always had this right. But when the Founding Fathers put that right in place, they didn't mean it to become what it is today."
Polls indicate that public opinion nationwide may be shifting on an issue that has simmered for generations, and through dozens of mass shootings.
A new poll conducted by The Associated Press-NORC Center for Public Affairs Research found that 69 percent of Americans think gun laws in the U.S. should be tightened. That's up from 61 percent who said the same in October 2016 and 55 percent when the AP first asked the question in October 2013. Overall, 90 percent of Democrats, 50 percent of Republicans and 54 percent of gun owners now favor stricter gun control laws.
But even with claims of historic social momentum on the issue of gun control, the AP poll also found that nearly half of Americans do not expect elected officials to take action.
Among the questions facing march organizers and participants will be how to translate this one-day event into legislative change.
One way they hope to do that is by registering young voters and channeling energy into the midterm elections.