It's been 5 years since the Sandy Hook shooting - here are the names and pictures of the 27 victims, including 20 children, who were murdered that day

On December 12, 2012, 20-year-old Adam Lanza walked into Sandy Hook Elementary School in Newtown, Connecticut, and shot 26 people, including 20 children, after also killing his mother in their home.

News of the massacre reverberated across the country, and elicited a tearful reaction from then-President Barack Obama, who described it as the worst day of his presidency.

Sen. Chris Murphy, who had previously been a representative for the district that included Newtown, was among those present when the families of the victims learned about the fates of their loved ones.

"Obviously, five years is a milestone, and I think it's important that there's some event in the community to remember what happened and to celebrate the lives we lost, but also the lives that have continued," he said on Wednesday ahead of an anniversary gathering with families of the fallen.

In the five years that have passed since that day, many of the parents and families launched foundations in their kid's names to help other children.

Here are all 27 people killed in the deadliest school shooting in US history: