Ten recent US mass shootings

Charleston, South Carolina, June 17, 2015 - A white gunman kills nine people at a historic black church in Charleston, South Carolina. [Paul Zoeller/Pool/EPA]

Washington, DC, September 16, 2013 - A gunman fatally shoots 12 people at a naval base in the US capital. The gunman is killed by police. [Olivier Doulier/Pool/EPA]

Miami, Florida, July 26, 2013 - A gunman kills six people in a shooting rampage at an apartment building, taking two people hostage before being killed by police after a lengthy standoff. [Gaston De Cardenas/Reuters]

Newtown, Connecticut, December 14 2012 - A young man kills 26 people, including 20 children at Sandy Hook elementary school. He also fatally shoots his mother. He commits suicide. [CJ Gunther/EPA]

Oak Creek, Wisconsin, August 5, 2012 - A white supremacist and US army veteran fatally shoots six people and wounds four others at a Sikh temple before taking his own life. [Darren Hauck/Reuters]

Aurora, Colorado, July 20, 2012 - A man kills 12 people when he opens fire at a movie theater showing a late-night premiere of a Batman film in a suburb of Denver. [Shannon Stapleton/Reuters]

Oikos, California, April 2, 2012 - A male nursing student methodically kills seven people at a Christian university. [Noah Berger/AP]

Fort Hood, Texas, November 5, 2009 - US army psychiatrist Major Nidal Hasan opens fire at his military base, killing 13 people and wounding 42, before being overcome by police. [Jack Plunkett/AP]

Binghamton, New York, April 3, 2009 - A gunman shoots dead 13 people at a civic centre for immigrants. [David DupreyAP]