|Guadalupe Canyon massacre
||1881 Aug 13
||Guadalupe Mountains, Arizona Territory
||1 wounded; cowboys ambushed while sleeping. Perpetrators disputed.
||1883 Dec 8
||Bisbee, Arizona Territory
||2 wounded by bandits during a general store robbery; one died soon after and is included in fatalities.
||1871 Oct 24
||Los Angeles, California
||killed by hanging and unknown injured in ethnic white mob violence against people and property in Chinatown.
||1881 June 1
||started when renegade Ute Indians killed a number ranchers and stole horses in Colorado. As the Ute moved into the southeastern Utah, a battle between the Indians and a band of ranchers and cowboys who wanted to protect their livestock was fought, resulting in the death of 13 cowboys in the gunfight.
|Golden Dragon massacre
||1977 Sep 4
|Bloody Island Massacre
||1850 May 15
||Retaliation by a Cavalry Regiment of the US Army for the murder of Frontiersman Andrew Kelsey and Charles Stone.
||1914 Apr 20
||killed by Colorado National Guard and Colorado Fuel & Iron Company camp guards on a tent colony of 1,200 striking coal miners and their families, many of whom were immigrants or minorities.
|Columbine Mine massacre
||1927 Nov 21
||miners killed with machine guns during coal mine strike.
||and the entire population of African-Americans in and near Rosewood, about 350, were forced from their homes and never returned.
||1924 Sep 9
||1886 May 4
||more than 130 injured by dynamite bomb and crossfire of bullets
||1922 Jun 21
||strikebreakers and union guards at coal mine.
|Saint Valentine's Day Massacre
||1929 Feb 14
||Prohibition gang killing.
|Brown's Chicken Massacre
||1994 Feb 14
||Store robbery with murder
||1912 Jun 10
||unsolved axe murders of members of 2 families.
||1856 May 24–25
||John Brown and followers killed 5 pro-slavery Kansans.
|Marais des Cygnes massacre
||1858 May 19
||Last major outbreak of violence in Bleeding Kansas
||1863 Aug 21
||Confederates killed civilians and burned a quarter of the town.
||2000 Dec 8-14
||Two brothers committed multiple acts of assault, robbery, rape and the murder of several people and a dog over the course of a week.
||1855 Aug 6
||scores injured in religious mob violence and arson.
||1873 Apr 13
||blacks killed at courthouse and as prisoners afterwards.
||six whites, remainder black killed as political intimidation.
||1887 Nov 22
||perhaps as many as 300 killed, 5+ injuries to striking black sugar-cane workers.
||1770 Mar 5
||11 civilians injured by British Army soldiers.
||1978 Jun 28
||four criminals known to the police and a Boston television investigative news anchorman and reporter, allegedly over the sale of cocaine. Perpetrators never determined.
|Haun's Mill massacre
||1838 Oct 30
||mob/militia attacked Mormons
|Kansas City massacre
||1933 Jun 17
||the dead include law enforcement officers and a criminal fugitive shot by members of a gang
|Sacking of Osceola
||1861 Sep 23
||Tried by drumhead court martial and executed, town of 3,000 sacked and burned in a raid by Jim Lane's Kansas Brigade.
||1864 Sep 27
||unarmed U.S. soldiers murdered by their Confederate captors including Jesse James. 123 killed in ensuing Battle of Centralia.
||1778 Sep 27
||54 captured or wounded by British
|Shelton Laurel Massacre
||1863 Jan 18
||unarmed Unionists, including three boys, were shot by Confederates after capture.
||1921 May 31 and Jun 1
||City of Tulsa,
||≥800 wounded. One of the nation's worst incidents of racial violence.
|Cherokee Courthouse Shootout
||1872 Apr 15
||Tahlequah, Indian Territory (present-day Oklahoma)
||died in a shoot out in a crowded courtroom, the dead included 8 Deputy US Marshals and 3 Cherokee citizens. Six Cherokee were wounded including the defendant and the judge.
|Chinese Massacre Cove
||Chinese gold miners ambushed and murdered by a gang of horse thieves.
||1897 Sep 10
||coal miners killed by sheriff's posse
||1937 Mar 21
||protestors killed by police
|Río Piedras massacre
||1935 Oct 24
||protestors killed by police
||1968 Feb 8
||28 injured by 9 Highway Patrol officers firing into a crowd of protestors against segregation.
||1876 Jul 4
||town looted in a racially motivated incident during Reconstruction.
||1780 May 29
||150 wounded, 53 captured by British against American Revolutionary soldiers
|Fort Pillow massacre
||1864 Apr 12
||277 Federal black troops by Confederate soldiers
||1842 Sep 17
||near San Antonio de Bexar
||15 injured Americans killed by Mexican artillery fire after raising white flag.
||1836 Mar 27
||28 escaped, 100 spared as prisoners in mass killing ordered by Antonio López de Santa Anna
||1838 Oct 5
||7 escaped from Cherokee Indians
||1862 Aug 10
||German Texans killed by Confederate soldiers
|Fort Parker massacre
||1836 May 19
||5 captured by Peta Nocona and a band of Comanche and members of 3 other tribes
|Mountain Meadows massacre
||1857 Sep 7–11
||Mountain Meadows, Utah Territory
||Emigrant wagon train annihilated by the Mormon Utah Territorial Militia and some Paiute Native Americans
||1945 Jul 7–8
||German POWs killed by an American guard
||1775 Mar 13
||Westminster (then part of the New Hampshire Grants)
||killed by officers of the British crown in endeavoring to subdue a mob.
||1864 Oct 2-3
||Wounded/captured Federal black troops by Confederate soldiers and guerrillas 
||1916 Nov 5
||27 injured and scores of labor unionists arrested by police and vigilantes.
||1919 Nov 11
||many injured in street conflict between American Legion and Industrial Workers of the World members
|Wah Mee massacre
||1983 Feb 18
||1 injured by 3 perpetrators during an armed robbery
|Bay View Massacre
||1886 May 5
||Labor protesters killed by National Guardsmen
|Rock Springs massacre
||1885 Sep 2
||15 injured in a racial dispute between white and Chinese miners.