Now playing Next USA Woman opens fire at Youtube HQ wounding three and killing herself A woman who had voiced complaints online about YouTube opened fire with a handgun at the tech company's headquarters near San Francisco on Tuesday, wounding three people before shooting herself dead, authorities and media said. 04/04/2018
Now playing Next USA This school district wants students to throw stones at school shooters The superintendent of a school district in Pennsylvania has a unique approach when it comes to preventing a school shooting. 26/03/2018
Now playing Next USA Maryland schoolgirl shot by her former boyfriend dies in hospital Jaelynn Willey's family was with her when her life support machine was turned off. 23/03/2018
Now playing Next no comment No Comment: the best videos of the week Join us for a look back at the week's best No Comment videos - where the pictures do the talking! 16/03/2018
Now playing Next USA Parkland Deputy captured riding in a golf buggy Authorities in Florida have released CCTV footage capturing the only armed Parkland Deputy assigned to Stoneman High riding in around outside in a golf buggy whilst the massacre was being committed inside the school. 16/03/2018
Now playing Next USA Seven thousand shoes pay tribute to US child gun violence victims Protesters have placed 7,000 pairs of shoes on Capital Hill in the US symbolising the number of children who have died in gun attacks in the US since 2012. 14/03/2018
Now playing Next USA Man reportedly shoots himself to death near White House The man died at the scene after suffering a "self-inflicted gun shot wound" near the fence of the White House's north lawn. 03/03/2018
Now playing Next USA Two shot dead at Central Michigan University The suspect, a 19-year-old man, is still at large and has been described as “armed and dangerous." 02/03/2018
Now playing Next world news Classes resume in Parkland, Florida Students and teachers have gone back to their lessions at the Margery Stoneman Douglas High School, two weeks after 17 people died in a shooting rampage. 28/02/2018
Now playing Next Norway Norway to ban semi-automatic weapons from 2021 Once implemented, the ban would mark 10 years since Norwegian national Anders Breivik shot and killed over 60 people, mostly teenagers, with semi-automatic firearms. 28/02/2018
Now playing Next USA Florida school shooter Nikolas Cruz had plenty more ammo School shooting suspect Nikolas Cruz had five more fully loaded magazines, one of which was marked with a swastika, sources tell NBC News. 28/02/2018
Now playing Next USA Florida school shooting: Armed officer failed to confront gunman Sheriff's deputy Scot Peterson, who was assigned to the school where 17 people were shot dead, has now resigned after being suspended 23/02/2018
Now playing Next USA US gun lobby chief slams critics who 'exploit' Florida school attack The head of the US National Rifle Association accused 'elites' of seeking political gain with their calls for gun controls. Donald Trump called the NRA 'Great American Patriots' but also spoke of reforms. 22/02/2018
Now playing Next USA Strong emotions as Florida shooting families meet Trump Anger and tears marked a White House meeting between the US President and those affected by last week's school shooting in Parkland that left 17 people dead 22/02/2018
Now playing Next USA Trump: "Arm teachers to keep schools safe" The president made the comment during an emotional hour-long "listening session" at the White House with survivors of the Parkland shooting, who urged him not to let it happen again 22/02/2018
Now playing Next world news Shooting vicitms invited to White House The White House has invited community members and victims from Parkland, Florida as well as victims from the Columbine and Sandy Hook shootings to a listening session. 21/02/2018
Now playing Next USA Florida shooting victim 'one of the greatest people I knew' Sheriff Israel comments on the impact Assistant Football Coach Aaron Feis had on Parkland, Florida. 15/02/2018
Now playing Next USA Florida shooting suspect charged with murder Nikolas Cruz, 19, is charged with 17 counts of premeditated murder. 15/02/2018
Now playing Next USA America's history of school shootings As debates rage on over gun control, we look back at America's history of school shootings. 15/02/2018