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The 10 Deadliest Mass Shootings in U.S. History

Facebook screenshot of Stephen Paddock, the suspect behind the Las Vegas shooting.

On Sunday evening, a lone gunman terrorized Las Vegas, Nev., in what President Donald Trump called "an act of pure evil." This became the deadliest mass shooting in U.S. history, but there have been many other such shootings.

Here is PJ Media's list of the ten deadliest mass shootings.

10. Fort Hood, 13 killed.

Nidal Malik Hasan in police uniform The 2007 picture provided by the Uniformed Services University of the Health Sciences shows Nidal Malik Hasan when he entered the program for his Disaster and Military Psychiatry Fellowship. (Uniformed Services University of the Health Sciences)

On November 5, 2009, Maj. Nidal Malik Hasan killed 13 people and injured 32 others at Fort Hood, Texas. This was the worst mass shooting at an American military base.

Hasan was shot and paralyzed from the waist down during the shooting. He was arraigned by a military court on July 20, 2011, and charged with 13 counts of premeditated murder and 32 counts of attempted murder. His court-martial began on August 7, 2013. He was found guilty on August 23, 2013, and sentenced to death five days later.

A Joint Terrorism Task Force had been aware of emails between Hasan and Yemen-based imam Anwar al-Awlaki. The U.S. government refused to mark the shooting as an act of terrorism or motivated by radical Islamic terrorism, prompting a lawsuit from survivors.

While the Fort Hood shooting in 2009 was the tenth most deadly in U.S. history, there were 5 other mass shootings that killed 13 people. These include:

The Binghamton, New York, shooting of 13 people by Jiverly Wong on April 3, 2009.

The Columbine shooting in Littleton, Colo., in which 12 students and one teacher were murdered by 18-year-old Eric Harris and 17-year-old Dylan Klebold on April 20, 1999.

The Wah Mee shooting in Seattle, Wash., in which 13 occupants of the Wah Mee gambling and social club were killed on February 18, 1983. Kwan Fai Mak and Benjamin Ng are currently serving life in prison, while the third shooter, Wai-Chiu "Tony" Ng, was on the run in Canada but eventually deported to Hong Kong in 2014.

The Wilkes-Barre shooting, in which 40-year-old prison guard George Banks killed 13 people, including five of his own children, in Wilkes-Barre, Pa., on September 25, 1982.

The Camden shooting, in which 28-year-old Howard Unruh, a World War II veteran, shot and killed 13 people in Camden, N.J., on September 5, 1949. He was found insane and committed to a mental institution.