Protesters left 7,000 pairs of shoes in front of the Capitol building Tuesday to symbolize the number of children killed by gun violencein the United Statessince the Sandy Hook Elementary School shooting in December 2012.
Avaaz's website says the group received donations from victims' families, members of the public, and even celebrities.
The memorial was set up by Avaaz, a group that mobilizes activists largely through online campaigns and petitions.
The 7,000 shoes in the "Monument for our Kids" installment represent every child that was killed by gunfire since the deadly shooting at Sandy Hook elementary school in Newtown, Connecticut, in 2012, according to Avaaz.
Donors to the shoe monument include actresses Susan Sarandon and Bette Midler, and talk show host Chelsea Handler. "Together they held up a sign that read "#NotOneMore", indicating that no more children should have to go through the pain, caused by gun violence.More news: Tiger Woods To Serve As Captain For Presidents Cup
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Wednesday's #ENOUGH National School Walkout, organized by the activists who helped plan the Women's March in Washington for the past two years, will begin at 10 a.m. local time (1400 GMT). Each pair represents a child who has been killed by gun violence in the USA since the 2012 Sandy Hook Elementary School shooting. That report found that approximately 1,300 children are killed by guns each and every year.
The display was laid out on the southeast lawn of the Capitol. "Culture is changing in America right now".
The silent protest is meant to spur lawmakers to take action on gun reforms.
Organizers of the memorial said the Parkland shooting was the catalyst for creating the memorial.