A history of riots in the United States:
http://en.wikipedia.org/wiki/List_of_ethnic_riots#Nativist_Period_1700s-1860Civil War Period 1861-1865
Nativist Period 1700s-1860
• 1824: Providence, Rhode Island Hard Scrabble Riots
• 1829: Cincinnati riots of 1829 Rioting against African Americans results in over a thousand leaving for Canada.
• 1829: Charlestown Anti-Catholic Riots
• 1831: Providence, Rhode Island
• 1834: Massachusetts Convent Burning
• 1834: Philadelphia pro-slavery riots[30]
• 1835: Five Points Riot
• 1835: Washington, D.C.[31][32]
• 1836: Cincinnati riots of 1836 - Several anti-abolitionist riots
• 1841: Cincinnati, Ohio White Irish-descendant and Irish immigrant dock workers rioted against Black dock workers. When the Black dock workers banded together to defend their community from the approaching Whites, the White rioters retreated and then commandeered a 6-pound cannon and shot it through the streets of Cincinnati.
• 1844: Philadelphia Nativist Riots (May 6–8, July 5–8)
• 1851: Hoboken Anti-German Riot
1863: New York City Draft Riot
• 1863: Detroit Race Riot
Reconstruction Period: 1865 - 1877[edit]
• 1866: New Orleans Riot
• 1866: Memphis, Tennessee
• 1868: Pulaski Riot
• 1868: Opelousas, Louisiana
• 1868: Camilla, Georgia
• 1870: Eutaw, Alabama
• 1870: Laurens, South Carolina
• 1870: New York City Orange Riot
• 1871: Second New York City Orange Riot
• 1871: Los Angeles Anti-Chinese Riot
• 1871: Meridian, Mississippi
• 1891: New Orleans Anti-Italian Riot
• 1873: Colfax massacre
• 1874: Vicksburg, Mississippi
• 1874: New Orleans, Louisiana {Liberty place riot see[33]}
• 1874: Coushatta, Louisiana
• 1875: Yazoo City, Mississippi
• 1875: Clinton, Mississippi
• 1876: Hamburg Massacre
• 1876: Ellenton, South Carolina
Jim Crow Period: 1878 - 1914[edit]
• 1885: Anti-Chinese riot in Rock Springs, Wyoming Territory
• 1886: Seattle riot of 1886[34]
• 1898: Wilmington Insurrection of 1898[35]
• 1898: Lake City, South Carolina
• 1898: Greenwood County, South Carolina
• 1900: Robert Charles Riots
• 1900: New York City
• 1906: Atlanta Race Riot[36]
• 1906: Brownsville, Texas
• 1907: Onancock, Virginia
• 1907: Pacific Coast Race Riots of 1907
• 1908: Springfield Race Riot of 1908[37]
• 1909: Omaha, Nebraska anti-Greek riot
• 1910: Nationwide riots following the heavyweight championship fight between Jack Johnson and Jim Jeffries in Reno, Nevada on July 4
War and inter-war period: 1914–1945[edit]
• 1917: East St. Louis Riot[38]
• 1917: Chester, Pennsylvania
• 1917: Philadelphia, Pennsylvania
• 1917: Houston Riot
• Red Summer of 1919
o 1919: Washington, D.C.
o 1919: Chicago Race Riot of 1919[39]
o 1919: Omaha Race Riot of 1919
o 1919: Charleston, South Carolina
o 1919: Longview, Texas
o 1919: Knoxville Riot of 1919
o 1919: Elaine Race Riot
• 1921: Tulsa race riot (Tulsa, Oklahoma)[40]
• 1923: Rosewood massacre (Rosewood, Florida)[41]
• 1927: Yakima Valley Anti-Filipino Riot[42]
• 1928: Wenatchee Valley Anti-Filipino Riot[42]
• 1929: Exeter Anti-Filipino Riot[43]
• 1930: Watsonville Anti-Filipino Riots, which inspired race riots in San Francisco, Salinas and San Jose and attacks elsewhere.[43]
• 1935: Harlem Riot of 1935
• 1943: Detroit Race Riot[44]
• 1943: Beaumont Race Riot of 1943
• 1943: Harlem Riot of 1943
• 1943: Zoot Suit Riots
Postwar era: 1946 - 1954[edit]
• 1946: Columbia, Tennessee Riot
• 1949: Peekskill Riots
• 1951: Cicero Race Riot in Illinois
Civil Rights and Black Power Movement's Period: 1955 - 1977[edit]
• 1958: Battle of Hayes Pond (Maxton, North Carolina)
• 1963: Birmingham Riot of 1963, Birmingham, Alabama
• 1963: Cambridge riot of 1963 (Cambridge, Maryland)
• 1963: Lexington Riot, Lexington, North Carolina [45]
• 1964: Harlem Riot of 1964 (Harlem neighborhood, Manhattan, New York City)
• 1964: Rochester riot (Rochester, New York)
• 1964: Philadelphia 1964 race riot (North Philadelphia section of Philadelphia, Pennsylvania)
• 1965: Watts Riots (Watts neighborhood, Los Angeles, California)
• 1966: Division Street Riots (Humboldt Park neighborhood, Chicago, Illinois)
• 1966: Hough Riots (Hough community, Cleveland, Ohio)
• 1966: North Omaha, Nebraska (North Omaha community, Omaha, Nebraska)
• Long Hot Summer of 1967
o 1967: Tampa Riots, (Tampa, Florida)
o 1967: Texas Southern University Riot (Houston, Texas)
o 1967: 1967 Detroit riot (Detroit, Michigan)
o 1967: Buffalo riot (Buffalo, New York)
o 1967: Milwaukee Riot (Milwaukee, Wisconsin)
o 1967: Minneapolis North Side Riots (Minneapolis, Minnesota)
o 1967: 1967 Newark riots (Newark, New Jersey)
o 1967: Plainfield riots (Plainfield, New Jersey)
• Protests of 1968
• 1968: Orangeburg massacre (Orangeburg, South Carolina)
• 1968: Nationwide riots following the assassination of Martin Luther King, Jr.
o 1968: Baltimore riot of 1968 (Baltimore, Maryland)
o 1968: Chicago (April 1968) (Chicago, Illinois)
o 1968: Louisville riots of 1968 (Louisville, Kentucky)
o 1968: 1968 Washington, D.C. riots (Washington, D.C.)
• 1969: 1969 York Race Riot (York, Pennsylvania)
• 1970: May 11th Race Riot (Augusta, Georgia)
• 1970: Jackson State killings (Jackson, Mississippi)
• 1971: Camden Riots (Camden, New Jersey)
• 1972-1977: Escambia High School riots (Pensacola, Florida)
• 1975: Chaffey High School Race Riot enhanced by local sniper (Ontario, California)
• 1978: Houston's Moody Park on the first anniversary of Joe Campos Torres death.
• 1980: Miami Riots (Miami, Florida)
• 1980: Chattanooga Riot (Chattanooga, Tennessee)
• 1984: Lawrence, Massachusetts Race Riot: A small scale riot centered at the intersection of Haverhill and railroad streets between working class whites and Hispanics; several buildings were destroyed by Molotov cocktails; August 8, 1984.[46]
• 1989: Overtown Riot (Miami, FL) In a reaction to the shooting of a black motorcyclist by a Hispanic police officer in the predominately black community of Overtown in Miami, residents rioted for two nights. The officer was later found guilty of manslaughter.
• 1991: Crown Heights riot (Crown Heights neighborhood, Brooklyn, New York City)
• 1992: Los Angeles Riots (Los Angeles, California): In a reaction to the acquittal of all four LAPD officers involved in the videotaped beating of Rodney King and the murder of Latasha Harlins; riots broke out mainly involving black youths in the black neighborhoods and shop owners in Korean neighborhoods, but overall rioting was mainly to get out the frustrations of the racial groups over the racial tensions that were building in the South Central neighborhood for years[citation needed].
• 1996: St. Petersburg Riots (St. Petersburg, Florida): After Officer Jim Knight stopped 18 yr. old Tyron Lewis for speeding, his car lurched forward and Knight fired his weapon, fatally wounding the black teenager. Riots broke out and lasted for about 2 days.[citation needed]
• 2001: Cincinnati riots (Cincinnati, Ohio): In a reaction to the acquittal of Steven Roach after the fatal shooting of an unarmed young black male, Timothy Thomas, during a foot pursuit, riots broke out over the span of a few days.
• 2003: Benton Harbor riots (Benton Harbor, Michigan)
• 2005: 2005 Toledo Riot (Toledo, Ohio): A race riot that broke out after a planned Neo-Nazi protest march through a black neighborhood.
• 2006: Fontana High School riot (Fontana, California): Riot involving about 500 Latino and black students[47]
• 2006: Prison Race Riots (California): A war between Latino and black prison gangs set off a series of riots across California[48][49]
• 2008: Locke High School riot[50] (Los Angeles, California)
• 2009: 2009 Oakland Riots (Oakland, California): Peaceful protests turned into rioting after the fatal shooting of an unarmed black man, Oscar Grant, by a BART transit policeman.
• 2014: Shooting of Michael Brown, later riots break out after the shooting was believed to be racially motivated.