A Florida man has pleaded guilty to murdering 17 people in a 2018 mass shooting at a high school campus in Parkland, Florida.

Nikolas Cruz, 23, also pleaded guilty to 17 counts of attempted murder for those he injured in the attack on Marjory Stoneman Douglas High School.

He faces the possibility of the death penalty or life in prison.

One of the deadliest school shootings in US history, the incident became a rallying cry for gun control activists.

The number of states that allow courts to disarm people showing warning signs of violence has doubled since the February massacre.

The student gun control activists of Parkland will announce an extensive bus tour Monday featuring 70 stops in 20 states, where the students will advocate stricter gun control legislation and register voters to that end.

It’s not going to be a quiet summer off for the students of Marjory Stoneman Douglas High School. With the school year ending, many of the Parkland school shooting survivors are taking their political activism on the road.

A group of students-turned-activists from Florida's Marjory Stoneman Douglas High School will be hitting the road next week on a nationwide bus tour aimed at educating voters — and encouraging them to actually vote to end gun violence.

They offered support to the students in Texas, and called out lawmakers’ failure to act.

Schoolchildren across the US walked out of their classrooms on Friday morning to demonstrate against gun violence.

Thousands of students poured out of classrooms in the US on Wednesday in an unprecedented expression of mourning and a demand for action to stem the country’s epidemic of gun violence.

Students at Marjory Stoneman Douglas High School, where a school shooting took 17 lives one month ago, kicked off a national school walkout Wednesday morning to press elected officials to take action on school gun violence.

Students across the country plan to walk out of class at 10:00 a.m. today to protest the government's failure to prevent crimes like the massacre at Parkland by tightening gun laws.