Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

People walking dogs pass the National Mall where 40,000 white silk flowers are installed to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States, April 13, 2021. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

People walking dogs pass the National Mall where 40,000 white silk flowers are installed to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States, April 13, 2021. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

A man riding a bicycle passes the National Mall where 40,000 white silk flowers are installed to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States, April 13, 2021. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)

Photo taken on April 13, 2021 shows 40,000 white silk flowers installed on the National Mall to honor the nearly 40,000 Americans who die every year from gun violence in Washington, D.C., the United States. (Photo: Xinhua)