On Friday, Sandy Hook Elementary School in Newtown, Conn. became the latest entry of a growing list where mass murder and tragedy have left its horrific mark.
A total of 27 people, including 20 children, have been reported dead in one of the worst mass shootings in U.S. history.
The shooting comes just 3 days after a gunman opened fire at a suburban Portland mall, killing two people before turning the gun on himself.
Both tragedies occur nearly five months after James Eagan Holmes walked into a Colorado movie theater during a screening of the film The Dark Knight Rises and shot at the audience with multiple firearms, wounding 58 and killing 12.
To say that mass shootings have become part of the culture in the United States is not farfetched, especially considering the vast tragedies involving firearms that have taken place on American soil in the past 20 years.
Here is a look at the worst mass shootings over the years:
August 1, 1966: Charles Joseph Whitman, a student at the University of Texas at Austin, killed 14 people and wounded 32 others during a shooting rampage on and around the college campus. The massacre unraveled after Whitman murdered his wife and mother at their homes. He was ultimately shot and killed about 90 minutes after the mass shooting by an Austin city Police Officer.
July 18, 1984: James Oliver Huberty, an out-of-work security guard, kills 21 people in a McDonald’s restaurant in San Ysidro, Calif. A police sharpshooter kills Huberty.
Aug. 20, 1986: Pat Sherrill, 44, a postal worker who was about to be fired, shoots 14 people at a post office in Edmond, Okla. He then kills himself.
June 18, 1990: James Edward Pough shoots people at random in a General Motors Acceptance Corp. office in Jacksonville, Fla., killing 10 and wounding four, before killing himself.
Oct. 16, 1991: A deadly shooting rampage took place in Killeen, Texas, as George Hennard opened fire at a Luby’s Cafeteria, killing 23 people before taking his own life. 20 others were wounded in the attack.
April 20, 1999: Seniors 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. The shooting resulted in an increased emphasis on school campus security across the country.
April 16, 2007: Student Seung-Hui Cho shot and killed 32 people on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Va. He later committed suicide is listed as the deadliest mass shooting to ever take place on a U.S. college campus.
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.
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.
July 20, 2012: At least 12 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.
August 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.