Biden stated that the United States was united after the September 11 attacks.
He said, "To me that's the central lesson from September 11th: Unity our greatest strength."
Biden and First Lady Jill Biden are expected to travel to three locations of the attack on Saturday.
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President Joe Biden called on unity to mark the 20th anniversary since 9/11. He cited the cooperation that was evident just days after the terror attacks.
"In the days following September 11, 2001, there was heroism everywhere. It was unexpected and expected. Biden stated that we also witnessed something very rare: national unity.
He said, "To me that's the central lesson from September 11th: Unity our greatest strength."
Biden paid tributes to almost 3,000 victims of the attack.
Biden stated, "To the families from the 2,977 victims of September 11th 2001 in New York City, Arlington and Virginia and Shanksville, Pennsylvania and the thousands more that were hurt, America and all of the world remember you and your loved one."
The White House (@WhiteHouse), September 10, 2021
He said, "We honor all who risked their lives and gave their life in the minutes, hours and months that followed."
Biden also addressed the fear, anger, resentment, and violence against Muslim Americans that followed the attacks.
Biden and Jill Biden, First Lady will travel to all three locations of the attacks on Saturday.
Lower Manhattan will be their first stop to pay tribute to the 2,763 victims of the World Trade Center's collapse. Shanksville, Pennsylvania will be their next stop. This is to honor the 40 passengers and crew who perished in the hijackers' attempt to crash United Airlines Flight 93 into the US Capitol.
They will also visit Pentagon, where 184 people were killed when American Airlines Flight 77 crashed into it.
Biden stated in his speech that "No matter how long it has been, these commemorations bring all of this back as if it was just a few seconds ago."