Barry Gutierrez, File, Associated Press
A gunman at a Connecticut elementary school killed more than two dozen people, including children, on Friday. It is among the world's worst mass shootings. Here is a look at some others:
— Aug. 5, 2012: Army veteran Wade Michael Page kills five men and one woman and wounds three other people, including a police officer, before taking his own life at the Sikh Temple of Wisconsin outside Milwaukee.
— July 20, 2012: Twelve people are killed when a gunman enters an Aurora, Colo., movie theater, releases a canister of gas and then opens fire during opening night of the Batman movie "The Dark Knight Rises." James Holmes, a 24-year-old former graduate student at the University of Colorado, has been charged in the deaths.
— March 11, 2012: Sixteen Afghan villagers, including nine children, are killed during a predawn attack in which Army prosecutors have charged Staff Sgt. Robert Bales, 39.
— July 22, 2011: Confessed mass killer Anders Behring Breivik kills 77 in Norway in twin attacks: a bombing in downtown Oslo and a shooting massacre at a youth camp outside the capital. The self-styled anti-Muslim militant admitted both attacks.
— April 9, 2011: Tristan van der Vlis, 24, fired more than 100 rounds from three guns in a suburban Dutch shopping mall, killing six people before turning one of the weapons on himself.
— Jan. 8, 2011: A gunman kills six people and wounds 13 others, including then-U.S. Rep. Gabrielle Giffords, in a shooting spree outside a grocery store in Tucson, Ariz. Doctors say Jared Lee Loughner, who has been sentenced to life in prison, suffers from schizophrenia.
— Nov. 5, 2009: Thirteen soldiers and civilians were killed and more than two dozen wounded when a gunman walked into the Soldier Readiness Processing Center at Fort Hood, Texas, and opened fire. Army psychiatrist Maj. Nidal Hasan is charged with 13 counts of premeditated murder and 32 counts of attempted premeditated murder.
— April 30, 2009: Farda Gadyrov, 29, enters the prestigious Azerbaijan State Oil Academy in the capital, Baku, armed with an automatic pistol and clips. He kills 12 people before killing himself as police close in.
— April 3, 2009: A 41-year-old man opened fire at an immigrant community center in Binghamton, N.Y., killing 11 immigrants and two workers. Jiverly Wong, a Vietnamese immigrant and a former student at the center, killed himself as police rushed to the scene.
— March 10, 2009: Michael McLendon, 28, killed 10 people — including his mother, four other relatives, and the wife and child of a local sheriff's deputy — across two rural Alabama counties. He then killed himself.
— Sept. 23, 2008: Matti Saari, 22, walks into a vocational college in Kauhajoki, Finland, and opens fire, killing 10 people and burning their bodies with firebombs before shooting himself fatally in the head.
— Dec. 5, 2007: A 19-year-old man with a rifle opened fire at Westroads Mall in Omaha, Neb., killing eight people before taking his own life. Five people were wounded, two critically.
— Nov. 7, 2007: After revealing plans for his attack in YouTube postings, 18-year-old Pekka-Eric Auvinen fires kills eight people at his high school in Tuusula, Finland.
— April 16, 2007: Seung-Hui Cho, 23, kills 32 people and himself on Virginia Tech campus in Blacksburg, Va.
— April 26, 2002: Robert Steinhaeuser, 19, who had been expelled from school in Erfurt, Germany, kills 13 teachers, two former classmates and policeman, before committing suicide.
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