\"What happened to Noah and nineteen other first graders in a peaceful little New England town ten days before Christmas seven years ago could happen to a kid you love,\" her post read.

Nicole Hockley, whose 6-year-old son Dylan Hockley was killed in the tragedy, detailed how she heard about the shooting seven years ago.

When she was in a class, a call came from a friend, she wrote on Twitter.

\"A shooting at our school. She was scared and asked me to go find her son,\" she wrote. \"I collapsed to the floor. Friends picked me up and one drove me to the school.\"

Seven years ago started as a normal Friday morning.
After getting Dylan and Jake on the bus, I did chores until I left for an exercise class. While driving to class, I felt a sharp pain in my stomach, so bad that I almost pulled over to the side of the road, convinced I was... pic.twitter.com/1RFk10oa3l

— Nicole Hockley (@NicoleHockley) December 13, 2019

At Sandy Hook, she found her eldest son, who was 8 at the time, and her friend's son.

\"I did not find Dylan,\" she said.

\"Seven years ago started as a normal Friday morning,\" Hockley said. \"And nothing has ever been normal since.\"

Hockley has since co-founded the Sandy Hook Promise, a non-profit aimed at minimizing gun violence across the country.

\"PHOTO:
Robert F. Bukaty/AP Photo
PHOTO: A memorial with crosses for the victims of the Sandy Hook Elementary School shooting massacre stands outside a home in Newtown, Conn., on the one-year anniversary of the shootings, Dec. 14, 2013.
>

Numerous others also spoke out in light of the anniversary, including a father who lost his daughter in the Parkland mass shooting and Gabrielle Giffords, the former congresswoman who was shot in the head in a shooting that left 12 others wounded in Tucson in 2011.

Fred Guttenberg, whose 14-year-old daughter Jaime Guttenberg was killed in the Stoneman Douglas High School shooting in Parkland, Florida, wrote that both incidents show \"why we must defeat the gun lobby and focus on gun safety.\"

\"Your lives and your safety are worth it,\" he rote on Twitter.

Seven years ago today we lost these innocent victims in the Sandy Hook shooting. Since then, too many more including my daughter. This is why we must defeat the gun lobby and focus on gun safety. Your lives and your safety are worth it. pic.twitter.com/FMyCph3BuQ

— Fred Guttenberg (@fred_guttenberg) December 14, 2019

They were children. We failed to keep them safe. And so I said enough.

7 years ago, tragedy struck. I thought I’d felt pain and loss without parallel, but Sandy Hook shattered my heart.

My life will always be devoted to honoring the memories of those we lost with action. pic.twitter.com/YO8FiKHq2V

— Gabrielle Giffords (@GabbyGiffords) December 14, 2019

Giffords said prior to the Newtown shooting, \"I thought I’d felt pain and loss without parallel, but Sandy Hook shattered my heart.\"

Giffords, like Hockley, has also become a gun reform activist.

\"They were children. We failed to keep them safe,\" she wrote. \"And so I said enough.\"

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