Students released from a lockdown are overcome with emotion following following the shooting at Marjory Stoneman Douglas High School in Florida. Photograph: AP

At 2.40pm on Wednesday a 19-year-old man wearing a gas mask walked into his former high school armed with smoke grenades and an AR-15 style rifle. Af(...)

A tattered US flag flies on an old tractor in a farm field outside Sutherland Springs, near the site of the shooting at the First Baptist Church in Texas. Photograph: Reuters/Rick Wilking

Across the empty fields of southern Texas, the silence hung heavy in the air. The tiny community of Sutherland Springs was thrown into chaos last week(...)

 People watch the aftermath of a mass shooting outside  the Mandalay Bay hotel near the scene of the Route 91 Harvest festival on Las Vegas Boulevard in Las Vegas, Nevada. Photograph: Paul Buck/EPA

At least 58 people died and more than 500 others were wounded when a gunman opened fire on a country music festival on the Las Vegas Strip. The gunma(...)

Members of the media photograph a man holding a sign reading outside the John J Moakley Federal Courthouse in Boston, Massachusetts, Monday, January 5th. Photograph: EPA

The trial of a man suspected of bombing the Boston Marathon in 2013 has begun with jury selection as it emerged that prosecutors rejected a deal that (...)

Father of Sandy Hook Elementary School shooting victim, Mark Barden, introduces  Barack Obama  as former U.S. Rep. Gabrielle Giffords, U.S. Vice President Joe Biden and family members of Newtown shooting victims look on in the Rose Garden of the White House. Photograph: Win McNamee/Getty Images

An angry US president Barack Obama has rounded on America’s gun lobby, accusing it of lying and intimidating a sufficient number of senators to(...)