Published On: Jul 20 2012 10:20:30 AM EDTUpdated On: Mar 10 2014 03:13:18 PM EDT
April 2, 2014: Spc. Ivan Lopez killed three people and wounded 16 others at the Fort Hood military post in Texas before fatally shooting himself, authorities say.
Sept. 16, 2013: Authorities say military contractor Aaron Alexis gunned down 12 people and wounded eight others at the Washington Navy Yard before he was killed.
Dec. 14, 2012: Gunman Adam Lanza massacred 20 first-graders and six staff members at Sandy Hook Elementary School in Newtown, Conn. He shot his mother to death before going to the school, and killed himself as authorities arrived.
Aug. 5, 2012: Six people were killed and four wounded when Wade Michael Page, 40, opened fire with a Springfield 9mm semi-automatic handgun at a Sikh temple in Oak Creek, Wis. According to the FBI, Page died from a self-inflicted gunshot wound to the head after he was shot in the stomach by a responding officer.
Jan. 8, 2011: Jared Lee Loughner killed six and wounded 13, including then-Rep. Gabrielle Giffords, outside a grocery store in Tucson, Ariz. Loughner pleaded guilty in 2012 and was sentenced to life in prison without the possibility of parole.
March 30, 2009: A gunman shot eight people to death and wounded several others at a nursing home in North Carolina. Most of those killed were elderly nursing home patients.
March 29, 2009: A gunman killed five family members, including his two children, and wounded his wife at a townhome in Santa Clara, Calif., before killing himself.
Sept. 2, 2008: Isaac Zamora, 28, was accused of killed six people in Alger, Wash., and wounding two others before turning himself into authorities. His mother described him to The Seattle Times as “extremely mentally ill,” and authorities said he had been released from jail the month before.
Feb. 2, 2008: Six women were bound with duct tape during a robbery at a Lane Bryant store in Chicago. Five were shot to death; one was shot and survived. The shooter remains unknown.
Oct. 16, 1991: George Hennard crashed his pickup through the wall of a Luby’s Cafeteria in Killeen, Texas, then shot 23 people to death and wounded 20. He then killed himself.
Aug. 20, 1986: Postal worker Pat Sherrill, 44, shot 14 at a post office in Edmond, Okla., before killing himself.
July 18, 1984: James Oliver Huberty, 21, killed 21 at a San Ysidro, Calif., McDonald’s before being killed by a police sharpshooter.
July 12, 1976: California State University custodian Edward Charles Allaway killed seven co-workers and wounded two.
Aug. 1, 1966: Charles Whitman pointed a rifle from the observation deck of the University of Texas at Austin’s Tower and began shooting in a homicidal rampage that went on for 96 minutes. Sixteen people were killed and 31 were wounded.
Sept. 5, 1949: World War II veteran Howard Unruh, 28, shot and killed 13 neighbors in Camden, N.J. He was committed to a state mental institution.