INSIDE EDITION looks back on the Sandy Hook tragedy on its three-year anniversary.
Three years ago, the Sandy Hook tragedy unfolded in Newtown, Connecticut.
The event marked the unthinkable as a gunman killed 20 children and six staff members at Sandy Hook Elementary School, as well as his own mother, before turning the gun on himself.
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President Obama wiped away tears as he spoke at a news conference after he learned the news.
He said: "They had their entire lives ahead of them, birthdays, graduations, weddings."
On the three-year anniversary of the tragedy, tributes poured in to the victims.
The 26 people who lost their lives at the school were: Charlotte Bacon, 6; Daniel Barden, 7; Rachel Davino, 29; Olivia Engel, 6; Josephine Gay, 7; Ana M. Marquez-Greene, 6; Dylan Hockley, 6; Dawn Hochsprung, 47; Madeleine F. Hsu, 6; Catherine V. Hubbard, 6; Chase Kowalski, 7; Jesse Lewis, 6; James Mattioli, 6; Grace McDonnell, 7; Anne Marie Murphy, 52; Emilie Parker, 6; Jack Pinto, 6; Noah Pozner, 6; Caroline Previdi, 6; Jessica Rekos, 6; Avielle Richman, 6; Lauren Rousseau, 3-; Mary Sherlach, 56; Victoria Soto, 27; Benjamin Wheeler, 6; Allison N. Wyatt, 6.
Notable names like Bernie Sanders and Martin O'Malley have taken to Twitter to remember the day.
Since #SandyHook Congress has done nothing to prevent this senseless violence from happening again. That is unacceptable. We must act now.
— Bernie Sanders (@SenSanders) December 14, 2015
As a father, the tragedy at #SandyHook weighs deeply on my heart today. We must enact real gun safety laws & prevent future tragedies.
— Martin O'Malley (@MartinOMalley) December 14, 2015
Others like Congresswoman Debbie Wasserman- Schultz have tweeted:
Remembering is not enough. Since #SandyHook, 90K Americans have died from gun violence. We need to act to keep guns out of the wrong hands.
— D Wasserman Schultz (@DWStweets) December 14, 2015
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Sandy Hook joined a long line of horrific school shootings, including 1999’s Columbine horror, in which 15 were killed, and the Virginia Tech shooting of 2007, where 33 people perished.
Watch Below: How Mother of Young Sandy Hook Victim Lives on After Her Son's Death
