The 9/11 attacks, the largest terrorist attacks on U.S. soil in history, left nearly 3,000 killed or missing.

NEW YORK, Sept. 12  -- Commemorative activities were held on Friday in New York City to remember those who lost their lives in the Sept. 11 terrorist attacks despite the COVID-19 pandemic.

The Tribute in Light art installation is presented to symbolize the Twin Towers at the World Trade Center site in New York, the United States, Sept. 11, 2020. (Xinhua/Wang Ying)

Hundreds of people took part in a memorial ceremony at the National September 11 Memorial and Museum on Friday morning, with Democratic presidential nominee Joe Biden, Vice President Mike Pence, New York State Governor Andrew Cuomo, former New York City Mayor Mike Bloomberg and many other dignitaries among the participants.