This is a list of conflicts in the United States. Conflicts are arranged chronologically from the late modern period to contemporary history. This list includes (but is not limited to) the following: Indian wars, skirmishes, wars of independence, liberation wars, colonial wars, undeclared wars, proxy wars, territorial disputes, and world wars. Also listed might be any battle that was itself only part of an operation of a campaign of a theater of a war. There may also be periods of violent civil unrest listed, such as: riots, shootouts, spree killings, massacres, terrorist attacks, and civil wars. The list might also contain episodes of: human sacrifice, mass suicide, genocides, and other related items that have occurred within the geographical area (including overseas territories) of what is today known as, the "United States of America".
20th Century
This covers conflicts and terrorist attacks in the 1900s that occurred within the modern territory of the United States of America. This also includes attacks upon the United States from Eurasian powers.
1900–1950
- July 6–10, 1903 Evansville race riot
- April – July, 1905 Chicago teamsters' strike
- June 1, 1906 Cananea strike
- September 22–24 Atlanta Massacre of 1906
- 1910–1919 Border War
- April 20, 1914 Ludlow Massacre
- 1914–1918 World War I
- 1919 Red Summer
- September 16, 1920 Wall Street bombing
- November 2–3, 1920 Ocoee massacre
- May 31 – June 1, 1921 Tulsa race riot
- 1912 – 1921 West Virginia coal wars
- December 14–15, 1922 Perry race riot
- January 1–7, 1923 Rosewood massacre
- March 20–23, 1923 Posey War
- November 21, 1927 Columbine Mine massacre
- 1931 July Red River Bridge War
- 1931 July 28 Bonus Army protest
- 1937 March 21 Ponce massacre
- 1939 – 1945 World War II
The Navy radio station at Dutch Harbor burning after the Japanese Attack, 4 June 1942 According to Japanese intelligence, the nearest field for land-based American aircraft was at
Fort Morrow AAF on
Kodiak, more than 600 miles (970 km) away, and Dutch Harbor was a sitting duck for the Japanese fleet, carrying out a coordinated operation with a fleet that was to capture
Midway Island. The Dutch Harbor attack was part of the
Aleutian Islands Campaign.
- October 16, 1940 – May 21, 1941 Machita Incident
- December 7, 1941 Attack on Pearl Harbor
- February 23, 1942 Bombardment of Ellwood
- February 24–25, 1942 Battle of Los Angeles
- June 3, 1942 – August 15, 1943 Battle of the Aleutian Islands
- June 21, 1942 Bombardment of Fort Stevens
- July 27, 1942 Lordsburg Killings
- September 9–29, 1942 Lookout Air Raids
- May 30, 1943 Zoot Suit Riots
- August 14, 1944 Fort Lawton Riot
- March 12, 1945 Santa Fe Riot
- April 16, – September 17, 1945 Project Hula
- May 5–6, 1945 Battle of Point Judith
- July 8, 1945 Midnight Massacre
1950–2000
- July 24–26, 1964 Rochester race riot
- August 11–17, 1965 Watts Rebellion
- July 12–15, 1966 Chicago West Side riots
- July 18–23, 1966 Hough riots
- Summer of 1967 Long, hot summer of 1967
- April 4 – May 27, 1968 King-assassination riots
- August 7–8, 1968 Miami riots
- August 23–28 1968 Democratic National Convention protests
- June 28 – July 3, 1969 Stonewall riots
- May 4, 1970 Kent State shootings
- May 11–12, 1970 Augusta riot
- August 24–27 1970 Memorial Park riot
- September 9, 1971 Attica Prison riot
- February 2–3, 1980 New Mexico State Penitentiary riot
- May 17–20, 1980 Miami riots
- May 13, 1985 Philadelphia MOVE bombing
- April 29, 1992 Los Angeles riots
- August 21–31, 1992 Ruby Ridge standoff
- February 28 – April 19, 1993 Waco siege
- April 19, 1995 Oklahoma City bombing
- February 28, 1997 North Hollywood shootout
- March 19 – 20, 1997 Heaven's Gate mass suicide
21st century
This includes domestic conflicts and terrorist attacks that took place within the United States. Note that actions of terrorism and domestic conflict are distinguished from one another.
- April 5, 2014-May 2014 Bundy standoff
- August 9, 2014-December 2, 2014 Ferguson unrest
- April 18, 2015-May 3, 2015 Baltimore protests
- June 17, 2015 Charleston church shooting
- January 1-February 16, 2016 Occupation of the Malheur National Wildlife Refuge
- August 11–12, 2017 Unite the Right rally
- October 27, 2018 Pittsburgh synagogue shooting
- August 3, 2019 El Paso shooting
- May 25, 2020-present 2020–2021 United States racial unrest
- August 26–31, 2020 Minneapolis false rumors riot
- January 6, 2021, 2021 United States Capitol attack
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