There is a frequent use of villainy in the United States. They could be bombings, massacres, betrayal, assassinations and political in the country. This list is only for the most extremely serious crimes such as terrorism and mass murder.

Assassination of Abraham Lincoln

See article: John Wilkes Booth

Assassination of John F Kennedy

See article: Lee Harvey Oswald

Helter Skelter (Manson family scenario)

See article: Charles Manson

San Ysidro McDonalds massacre

On July 18, 1984, James Oliver Huberty, shot and killed 22 (including himself), injuring 19 in a San Ysidro, California McDonalds.

The Last Christmas

See article: Ronald Gene Simmons Sr.

Luby's massacre

A misogynist and white supremacist, George Hennard, shot and killed 24 people, including himself on October 16, 1991. 22 people were injured in the shootout.

1993 Waco siege

See David Koresh

Oklahoma City bombing

See article: Timothy McVeigh

Heaven's Gate mass suicide

See article: Marshall Applewhite

Columbine massacre

See articles: Eric Harris and Dylan Klebold

The Columbine massacre took place in April 20, 1999 in Columbine High School.

9/11 bombings

See article: 9/11

D.C. sniper attacks

See articles: John Allen Muhammed and Lee Boyd Malvo

Virginia Tech shooting

See article: Seung-Hui Cho

Fort Hood shooting

See article: Nidal Malik Hassan

2012 Aurora shooting

See article: James Holmes

Sandy Hook Elementary School shooting

See article: Adam Lanza

Boston Marathon bombing

See articles: Dzhokhar and Tamerlan Tsarnaev

2014 Isla Vista killings

See article: Elliot Rodger

Charleston church shooting

See article: Dylann Roof

2015 San Bernardino attacks

See article: Rizwan Farook and Tashfeen Malik

Pulse Nightclub shooting

Omar Mateen, an Islamic terrorist, shot and killed 49 people in an Orlando, Florida nightclub, on June 12, 2016. Later, he was shot and killed by the police.

2016 shooting of Dallas Police Officers

See article: Micah Xavier Johnson

2016 New York and New Jersey bombings

See article: Ahmed Khan Rahimi

2017 Las Vegas shootings

See article: Stephen Paddock

2017 Sutherland Springs church shooting

See article: Devin Patrick Kelley

2018 Douglas High School shooting

See article: Nicholas Cruz