Assassination of Martin Luther King, Jr. | The Martin Luther King, Jr. Research and Education Institute. https://kinginstitute.stanford.edu/assassination-martin-luther-king-jr. Accessed 15 Sept. 2026.
Assassins | Music Theatre International. 29 Dec. 2020, https://www.mtishows.com/assassins.
Bullet Speech | Theodore Roosevelt Presidential Library. https://www.trlibrary.com/bullet-speech. Accessed 15 Sept. 2026.
By. “JOHN HINCKLEY REFUSED VOTE IN D.C.” Orlando Sentinel, 19 Sept. 1990, https://www.orlandosentinel.com/1990/09/19/john-hinckley-refused-vote-in-dc/.
Byman, Daniel, and Riley McCabe. Left-Wing Terrorism and Political Violence in the United States: What the Data Tells Us. Sept. 2025. www.csis.org, https://www.csis.org/analysis/left-wing-terrorism-and-political-violence-united-states-what-data-tells-us.
C, et al. “John Hinckley, Who Tried To Kill A President, Wins His Freedom.” NPR, 27 July 2016. America. NPR, https://www.npr.org/sections/thetwo-way/2016/07/27/487595220/john-hinckley-who-tried-to-kill-a-president-wins-his-freedom.
Cavendish, Demetria Kalodimos, Steve. “Sara Jane Moore, Who Tried to Kill Gerald Ford, Dies at 95.” Nashville Banner, 24 Sept. 2025, https://nashvillebanner.com/2025/09/24/sara-jane-moore-dies-gerald-ford/.
Charlie Kirk Murder Suspect Tyler Robinson Pleads Not Guilty as Judge Clears Way for Death Penalty Trial. 2 Sept. 2026, https://www.bbc.com/news/articles/cj4jn9q7evpo.
Chayka, Kyle. “Charlie Kirk and Tyler Robinson Came from the Same Warped Online Worlds.” The New Yorker, 17 Sept. 2025. www.newyorker.com, https://www.newyorker.com/culture/infinite-scroll/charlie-kirk-and-tyler-robinson-came-from-the-same-warped-online-worlds.
Coscarelli, Joe. “A Bullet Casing Quoted ‘Bella Ciao,’ an Antifascist Anthem Now Popular With Video Gamers.” The New York Times, 12 Sept. 2025, https://www.nytimes.com/2025/09/12/us/tyler-robinson-bella-ciao-bullet.html.
Crucible of Empire – PBS Online. https://www.pbs.org/crucible/tl20.html. Accessed 15 Sept. 2026.
Deng, Rae. “Charlie Kirk Shooting Suspect an Unaffiliated Voter, Not a Registered Republican.” Snopes, 12 Sept. 2025, https://www.snopes.com//fact-check/kirk-shooting-suspect-republican/.
———. “Posts Falsely Claim Charlie Kirk Shooting Suspect Was a Trump Donor.” Snopes, 12 Sept. 2025, https://www.snopes.com//fact-check/charlie-kirk-suspect-trump-donor/.
Duran, Celinet. “Far-Left versus Far-Right Fatal Violence: An Empirical Assessment of the Prevalence of Ideologically Motivated Homicides in the United States.” Criminology, Criminal Justice, Law & Society, vol. 22, no. 2, Aug. 2021. ccjls.scholasticahq.com, https://ccjls.scholasticahq.com/article/26973-far-left-versus-far-right-fatal-violence-an-empirical-assessment-of-the-prevalence-of-ideologically-motivated-homicides-in-the-united-states.
Editors, HISTORY com. “Gerald Ford Survives First Assassination Attempt | September 5, 1975.” HISTORY, 16 Nov. 2009, https://www.history.com/this-day-in-history/september-5/gerald-ford-survives-first-assassination-attempt.
———. “Malcolm X Assassinated | February 21, 1965.” HISTORY, 24 Nov. 2009, https://www.history.com/this-day-in-history/february-21/malcolm-x-assassinated.
———. “Sirhan Sirhan Receives Death Penalty for Assassination of Robert F. Kennedy | April 23, 1969.” HISTORY, 13 Nov. 2009, https://www.history.com/this-day-in-history/april-23/sirhan-sirhan-receives-death-penalty.
———. “The Republican Revolution | November 8, 1994.” HISTORY, 9 Feb. 2010, https://www.history.com/this-day-in-history/november-8/the-republican-revolution.
“Findings on Martin Luther King, Jr. Assassination.” National Archives, 15 Aug. 2016, https://www.archives.gov/research/jfk/select-committee-report/part-2b.html.
Franklin D. Roosevelt: The American Franchise | Miller Center. 4 Oct. 2016, https://millercenter.org/president/fdroosevelt/the-american-franchise.
House, The White. “Trump Administration Unleashes Global Campaign to Crush Radical Left Terrorism.” The White House, 16 July 2026, https://www.whitehouse.gov/releases/2026/07/trump-administration-unleashes-global-campaign-to-crush-radical-left-terrorism/.
How Misinformation and Disinformation Fuel Online Radicalization. 5 Dec. 2024, https://www.qu.edu/academics/experiential-learning/course-projects-and-capstones/student-projects/political-extremism-and-online-radicalization/.
In Remembrance: 40 Years since the Assassination Attempt on President Reagan. https://www.secretservice.gov/reagan40thanniversary. Accessed 15 Sept. 2026.
Jasko, Katarzyna, et al. “A Comparison of Political Violence by Left-Wing, Right-Wing, and Islamist Extremists in the United States and the World.” Proceedings of the National Academy of Sciences, vol. 119, no. 30, July 2022, p. e2122593119. DOI.org (Crossref), https://doi.org/10.1073/pnas.2122593119.
Jipson, Art, and Paul J. Becker. “Right-Wing Extremist Violence Is More Frequent and More Deadly than Left-Wing Violence − What the Data Shows.” The Conversation, 17 Sept. 2025, https://doi.org/10.64628/AAI.khvnvmtrk.
“John Hinckley Jr., Who Shot Ronald Reagan to Impress Jodie Foster, Says He Wishes Her Well.” NBC News, 12 Aug. 2026, https://www.nbcnews.com/news/us-news/john-hinckley-jr-jodie-foster-wishes-her-well-rcna592130.
Jones, Brea. “Posts Make Unfounded Claims About Political Affiliation of John Wilkes Booth.” FactCheck.Org, 22 Apr. 2022, https://www.factcheck.org/2022/04/posts-make-unfounded-claims-about-political-affiliation-of-john-wilkes-booth/.
Jones, Seth G., and Catrina Doxsee. The Escalating Terrorism Problem in the United States. June 2020. www.csis.org, https://www.csis.org/analysis/escalating-terrorism-problem-united-states.
Kasprak, Alex. “Trump Shooter Once Donated Money to a Democratic Cause?” Snopes, 15 July 2024, https://www.snopes.com//fact-check/trump-shooter-donation/.
Kates, Graham, et al. CBS News Investigation: The Secret Double Life of Thomas Crooks, Trump’s Would-Be Assassin. https://www.cbsnews.com/lifeofthomascrooks/. Accessed 15 Sept. 2026.
Knight, Athelia, and Neil Henry. “Love Letter Offers Clue To Motive in Shooting.” The Washington Post, 1 Apr. 1981, https://www.washingtonpost.com/archive/politics/1981/04/01/love-letter-offers-clue-to-motive-in-shooting/2474a225-eeba-47ef-94a1-045db2e0b57b/.
Murder and Extremism in the United States in 2024 | ADL. https://www.adl.org/resources/report/murder-and-extremism-united-states-2024. Accessed 16 Sept. 2026.
Orders, Executive. “Designating Antifa as a Domestic Terrorist Organization.” The White House, 22 Sept. 2025, https://www.whitehouse.gov/presidential-actions/2025/09/designating-antifa-as-a-domestic-terrorist-organization/.
Rascouët-Paz, Anna. “Yes, Trump’s Alleged Would-Be Assassin Was a Republican.” Snopes, 15 July 2024, https://www.snopes.com//fact-check/trump-shooter-republican/.
Saelee, Mike. Research Guides: James Garfield Assassination: Topics in Chronicling America: Introduction. Research guide. https://guides.loc.gov/chronicling-america-james-garfield-assassination/introduction. Accessed 15 Sept. 2026.
Smith, Philip, and T. R. Reid. “Hinckley Seeks Absentee Ballot From Colorado.” The Washington Post, 6 Sept. 1984, https://www.washingtonpost.com/archive/politics/1984/09/07/hinckley-seeks-absentee-ballot-from-colorado/f7db62af-1114-4d87-9e55-d40b85f8a0ae/.
Wizevich, Eli. “Harvey Milk, One of the World’s First Openly Gay Politicians, Was Assassinated on This Day in 1978.” Smithsonian Magazine, https://www.smithsonianmag.com/smart-news/harvey-milk-one-of-the-worlds-first-openly-gay-politicians-was-assassinated-on-this-day-in-1978-180985464/. Accessed 15 Sept. 2026.
