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.
Feb. 14, 2008: Former student Steven Kazmierczak, 27, opened fire in a lecture hall at Northern Illinois University in DeKalb, fatally shooting five students and wounding 18 others before committing suicide.
_ Dec. 5, 2007: Robert A. Hawkins, 19, opened fire with a rifle at a Von Maur store in an Omaha, Neb., mall, killing eight people before taking his own life. Five more people were wounded, two critically.
_ April 16, 2007: Seung-Hui Cho, 23, fatally shot 32 people in a dorm and a classroom at Virginia Tech in Blacksburg, then killed himself in the deadliest mass shooting in modern U.S. history.
_ Oct. 2, 2006: Charles Carl Roberts IV, 32, shot to death five girls at West Nickel Mines Amish School in Pennsylvania, then killed himself.
_ March 21, 2005: Student Jeffrey Weise, 16, killed nine people, including his grandfather and his grandfather's companion at home. Also included were five fellow students, a teacher and a security guard at Red Lake High School in Red Lake, Minn. He then killed himself. Seven students were wounded.
_ March 12, 2005: Terry Ratzmann, 44, gunned down members of his congregation as they worshipped at the Brookfield Sheraton in Brookfield, Wisconsin, slaying seven and wounding four before killing himself.
_ March 5, 2001: Charles "Andy" Williams, 15, killed two fellow students and wounded 13 others at Santana High School in Santee, Calif.
_ July 29, 1999: Former day trader Mark Barton, 44, killed nine people in shootings at two Atlanta brokerage offices, then killed himself.
_ April 20, 1999: Students Eric Harris, 18, and Dylan Klebold, 17, opened fire at Columbine High School in Littleton, Colo., killing 12 classmates and a teacher and wounding 26 others before killing themselves in the school's library.
_ May 21, 1998: Two teenagers were killed and more than 20 people hurt when Kip Kinkel, 17, opened fire at a high school in Springfield, Ore., after killing his parents.
_ March 24, 1998: Andrew Golden, 11, and Mitchell Johnson, 13, killed four girls and a teacher at a Jonesboro, Ark., middle school. Ten others were wounded in the shooting.
_ July 12, 1976: Edward Charles Allaway, a custodian in the library of California State University, Fullerton, fatally shot seven fellow employees and wounded two others.
_ May 4, 1970: Four Kent State University students were killed by Ohio National Guard troops during a campus protest of the invasion of Cambodia. Nine people were wounded.
_ Aug. 1, 1966: Charles Whitman opened fire from the clock tower at the University of Texas at Austin, killing 16 people and wounding 31.
