Flags representing those who have died from COVID-19 at the memorial in Washington, DC.

A volunteer places flags representing those who have died from COVID-19 at the memorial next to the Washington monument in DC.

Flags representing those who have died from COVID-19 at the memorial in Washington, DC.

Flags representing those who have died from COVID-19 at the memorial in Washington, DC.

Flags representing those who have died from COVID-19 at the memorial in Washington, DC.

Messages from friends and family members, written on flags representing those who have died from COVID-19, on display at a memorial near the Washington Monument in DC.

Messages from friends and family members, written on flags representing those who have died from COVID-19, on display at a memorial near the Washington Monument in DC.

Flags representing those who have died from COVID-19 at the memorial in Washington, DC. near the Washington Monument.

The Washington Monument and a sign with the number of of deaths in the US from COVID-19 (as of 9/18/21) with a field of flags repesenting those who have died in the foreground.