"If you listen real close, you can hear the people in power shaking," David Hogg, a survivor who has emerged as one of the student leaders of the movement, told the roaring crowd of demonstrators at the March for Our Lives rally in Washington.
He warned: "We will get rid of these public servants who only care about the gun lobby."
Chanting "Vote them out!" and bearing signs reading "We Are the Change," ″No More Silence" and "Keep NRA Money Out of Politics," hundreds of thousands of protesters packed Pennsylvania Avenue between the Capitol and the White House.
Large rallies with crowds estimated in the tens of thousands in some cases also unfolded in such cities as Boston; New York; Los Angeles; Chicago; Houston; Phoenix; Fort Worth, Texas; Minneapolis; and Parkland, Florida, the site of the Feb. 14 attack at Marjory Stoneman Douglas High School that left 17 people dead.