Meet the Chicago youth who are working with March for Our Lives organizers in their fight to end gun violence.

The protests mark the 19th anniversary of the school shooting at Columbine High School.

They had a plan for the yearbook. Then 17 people were shot and killed on their campus.

“I hope we did you all justice.”

Late Tuesday night, senior law enforcement officials identified the alleged shooter.

Certainly not marching.

Thousands of students walked out of school to protest gun violence.

Students were unimpressed by the education secretary’s visit to their school on Wednesday.

“We want Americans to stop being afraid of demanding our politicians to take action.”

The fight against gun violence will be making an appearance at this year’s Academy Awards.

Dozens of teens attended a “lie-in” outside the White House following the mass shooting in a Parkland, Florida, high school.

The teens say the “March for Our Lives” gun-control demonstration will take place on March 24 in every American city.

Emma Gonzalez delivered a powerful speech at an anti-gun rally in Fort Lauderdale, Florida.

We’ll continue to update this post as we know more.

Sales surge after a mass shooting.

Carly Novell’s grandpa survived the first U.S. mass shooting by hiding in a closet. Seventy years later, she did the same at her Florida high school.

A leader of the Republic of Florida says Nikolas Cruz was connected to his group.

The teachers, janitors, and coaches who saved students during the Wednesday shooting.

“We are children. You guys are the adults. Work together, come over your politics, and get something done.”

Melissa Falkowski told Anderson Cooper: “We could not have been more prepared for this situation, which is what makes it so frustrating.”