Patterns of Conflict, War, and Terrorism
- Page ID
- 255501
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)This page displays sensitive imagery (e.g., images of lynching and the Holocaust) and discusses sensitive topics (e.g., sexual assault and genocide).
There are countless examples of conflict, war, and terrorism across human history, and there are numerous examples in more recent centuries and even decades. On this page we apply the types of conflict, war, and terrorism discussed on the Overview page to real events occurring over the past few centuries including to the present day. Though we include a global perspective, which is necessary in discussing war, we focus largely on US involvement in conflict, war, and terrorism in the past and today. We also offer attention to several consequences of conflict, war, and terrorism, including the loss of life, liberty, and culture, sexual assault, fear, and other outcomes.
Conflict
In the subsections that follow, we provide examples of segregation, expulsion, and genocide in the US and abroad. Keep in mind the Caution box above, as you will encounter imagery that may be emotionally challenging to view – images that depict the realities and horrors of conflict, war, and violence. Please feel free to skip this imagery if needed.
Segregation

During the era of Jim Crow racism in the South, several thousand African Americans were lynched.
US Library of Congress – public domain
Expulsion
After the attack on Pearl Harbor during World War II, governmental suspicion and cultural fear of Japanese individuals expanded, including of persons who were American citizens. The US Army, in the name of national security, first mandated curfews for and recommended evacuation of Japanese Americans in specific areas of the West Coast, which was deemed a military area during the war. However, in 1942 the military engaged in the process of forced evaluation and detention of Japanese-American residents in the West Coast region. As the National Archives (2025) explains, unless they were able to make alternate arrangements within days, "their homes, farms, businesses, and most of their private belongings were lost forever." An estimated 112,000 persons of Japanese descent were expelled to internment camps, with the majority of those (70,000) being American citizens. The Archives continues that for nearly three years or more, "four or five families, with their sparse collections of clothing and possessions, shared tar-papered army-style barracks."
Another example of expulsion in US history is the forced relocation of Indigenous communities commonly known as the Trail of Tears. In the early to mid 1800s, many tribes located between the early states and the Mississippi River ceded their land to the US government in several dozen treaties. In 1830 the Indian Removal Act was passed, which mandated that the remaining tribes in this area move west of the river. Over the next couple decades, an estimated 100,000 Indigenous people relocated by force or per treaties coerced by the government. For instance, Cherokee people had lived across the land of what became several southern states, but are now concentrated in what we call Oklahoma, the end of the Trail of Tears. In the process of this relocation, around 3,500 people perished from the Muscogee (Creek) nation alone. Others expelled include the Choctaw, Chickasaw, Seminole, Ponca, and Ho-Chunk/Winnebago nations (Mandewo n.d.; National Park Service n.d.). As we discuss below, the forced 'removal' of Indigenous people was part of a larger project of state-sanctioned genocide.
A recent example of expulsion outside the US is the internment of the Uyghur population, a primarily Muslim ethnic group living in the Xinjiang Uyghur Autonomous Region (XUAR) of China. The Chinese government has been accused of engaging in crimes against humanity due to their mistreatment of Uyghur people, including allegedly detaining more than a million Uyghur individuals in hundreds of 're-education camps.' Additionally, several nations have accused China of engaging in genocide, as there have been reports of mass sterilization intended to reduce the Uyghur population (BBC 2022). We will discuss another example of expulsion and genocide co-occurring in the next subsection.
Genocide
We will now return to our discuss of genocide that began in the Education chapter, examining why scholars argue that this system of education and the larger processes that white settlers and the United States government engaged in were in fact genocide. According to Jeffrey Ostler, a historian at the University of Oregon, claims of genocide are contested by scholars and activists, like many other social problems. However, he provides evidence that the violence was systematic and intentional. To learn more, you are welcome to read Ostler’s article exploring complexity in claims of genocide. In addition, let’s review this history.


The first photo portrays a group portrait of students from the Spokane tribe at the Forest Grove Indian Training School, taken when they were “new recruits.” In the second photo, “Seven months later – the children pictured are probably the Spokane children who, according to the school roster, arrived in July 1881: Alice L. Williams, Florence Hayes, Suzette (or Susan) Secup, Julia Jopps, Louise Isaacs, Martha Lot, Eunice Madge James, James George, Ben Secup, Frank Rice, and Garfield Hayes” (Francis 2019).
“Images” from A Tragic Collision of Cultures are in the Public Domain; courtesy of Pacific University Archives; caption © Mike Francis is in the Public Domain
War

Although World War II killed an estimated 55 million people, a smaller percentage of the world’s population died in armed conflict during the twentieth century than in earlier eras.
Reid Kasprowicz – A Flag for the Fallen – CC BY-NC-ND 2.0
The United States at War
U.S. Participation in Major Wars
| War | Number of troops | Troop deaths | Troops wounded |
|---|---|---|---|
| Revolutionary War | 184,000–250,000 | 4,435 | 6,188 |
| War of 1812 | 286,730 | 2,260 | 4,505 |
| Mexican War | 78,218 | 13,283 | 4,152 |
| Civil War | 3,867,500 | 618,222–750,000 | 412,175 |
| Spanish-American War | 306,760 | 2,446 | 1,662 |
| World War I | 4,734,991 | 116,516 | 204,002 |
| World War II | 16,112,566 | 405,399 | 671,846 |
| Korean War | 5,720,000 | 36,574 | 103,284 |
| Vietnam War | 8,744,000 | 58,209 | 153,303 |
| Persian Gulf War | 2,225,000 | 382 | 467 |
| Iraq and Afghanistan Wars | 2,333,972 | 6,251 | 47,566 |
| Note: Deaths are from combat, disease, and other causes. | |||
Terrorism

The 9/11 attacks spawned an immense national security network and prompted the expenditure of more than $3 trillion on the war against terrorism in the decade that followed.
Michael Foran – 9/11 WTC 32 – CC BY-NC-SA 2.0
However, foreign terrorism is not the only terrorist concern in the US. The FBI warned somewhat recently that domestic terrorism may be a greater threat to the nation than foreign terrorism. In a statement to the House Homeland Security Committee in 2019, Michael McGarrity, Assistant Director of the Counterterrorism Division at the FBI, stated:
"We believe domestic terrorists pose a present and persistent threat of violence and economic harm to the United States; in fact, there have been more arrests and deaths caused by domestic terrorists than international terrorists in recent years. ... Individuals adhering to racially motivated violent extremism ideology have been responsible for the most lethal incidents, however, and the FBI assesses the threat of violence and lethality posed by racially motivated violent extremists will continue."
In particular, white nationalist extremist terrorism is the greatest concern. White nationalism is "a political and ideological movement advocating for the preservation of a white national majority within historically white nations" such as the US. Motivated by white supremacy, it centers on the belief that white people are superior to people of color, though it adds that white people are "deserving of national pride" (Caffrey 2023). The advent of the internet has resulted in the radicalization of individuals who come to align with this ideology (Caffrey 2023; McGarrity 2019). Radicalization refers to a "process through which an individual changes from a non-violent belief system to a belief system that includes the willingness to actively advocate, facilitate, or use violence as a method to effect societal or political change" (Department of Homeland Security 2022). Others are socialized into white nationalist ideology during childhood such as with Derek Black, heir to the KKK discussed earlier.
The domestic terrorism threat is concerned with violent extremism associated with white nationalism. According to the Department of Homeland Security (2022), "Violent White Supremacist Extremists (WSE) are defined as individuals who seek, wholly or in part, through unlawful acts of force or violence, to support their belief in the intellectual and moral superiority of the white race over other races." These extremists often target racially and religiously marginalized groups, and solo (white) men are the typical offenders. Examples of violent WSE attacks include when Dylan Roof murdered nine people at a Black church in 2015, when Fraizer Glenn Miller murdered three people outside of Jewish centers in 2014, and when Wade Michael Page murdered six people at a Sikh temple in 2012. Firearms were the weapon in all of these examples, and shootings are the most common type of attack in recent WSE incidents (Department of Homeland Security 2022).
Consequences of Conflict, War, and Terrorism
Some of the patterns of interaction in conflict are consequences themselves. For example, expulsion has the consequences of forced displacement and loss of one's home or homeland, and genocide has the consequences of the loss of culture and even of life. Thus, in this section we focus on other consequences, primarily of war and terrorism. We discuss casualties, which includes both injury and death. In some of this discussion we focus on death casualties specifically, whereas in others we may include those injured. We also discuss sexual assault as another horrendous consequence of conflict and war, as well as other consequences.






