Here is a list of a few of the usual race riots in the USA held in the last 100 years.
You asked if the rioting has helped or hurt, I don’t know but a race riot is certainly a frequent community event.
What do you think? Are you better off for the long history of community riots?
1917: East St. Louis Riot
1917: Chester, Pennsylvania
1917: Philadelphia, Pennsylvania
1917: Houston Riot
Red Summer of 1919
1919: Washington, D.C.
1919: Chicago Race Riot of 1919
1919: Omaha Race Riot of 1919
1919: Charleston, South Carolina
1919: Longview, Texas
1919: Knoxville Riot of 1919
1919: Elaine Race Riot
1921: Tulsa race riot (Tulsa, Oklahoma)
1923: Rosewood massacre (Rosewood, Florida)
1927: Yakima Valley Anti-Filipino Riot
1928: Wenatchee Valley Anti-Filipino Riot
1929: Exeter Anti-Filipino Riot
1930: Watsonville Anti-Filipino Riots, which inspired race riots in San Francisco, Salinas and San Jose and attacks elsewhere.
1935: Harlem Riot of 1935
1943: Detroit Race Riot
1943: Beaumont Race Riot of 1943
1943: Harlem Riot of 1943
1943: Zoot Suit Riots
Postwar era: 1946 – 1954
1946: Columbia, Tennessee Riot
1949: Peekskill Riots
1951: Cicero Race Riot in Illinois
Civil Rights and Black Power Movement’s Period: 1955 – 1977
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
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
1967: Tampa riots, (Tampa, Florida)
1967: Texas Southern University Riot (Houston, Texas)
1967: 1967 Detroit riot (Detroit, Michigan)
1967: Buffalo riot (Buffalo, New York)
1967: Milwaukee Riot (Milwaukee, Wisconsin)
1967: Minneapolis North Side Riots (Minneapolis, Minnesota)
1967: 1967 Newark riots (Newark, New Jersey)
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.
1968: Baltimore riot of 1968 (Baltimore, Maryland)
1968: Chicago (April 1968) (Chicago, Illinois)
1968: Louisville riots of 1968 (Louisville, Kentucky)
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)
Post Civil Rights Era: 1978 to today
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.
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.
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.
2001: Cincinnati riots (Cincinnati, Ohio): In a reaction to the fatal shooting of an unarmed young black male, Timothy Thomas by Cincinnati police officer Steven Roach, 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.
2006: Prison Race Riots (California): A war between Latino and black prison gangs set off a series of riots across California.
2008: Locke High School riot (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.
There is also a list of the riots that were celebrated during the 19th century.
One thing I am sure of – the riots will continue just as surely as spring follows winter. I don’t believe that there is any real intention to do anything other than have a community riot event. Check the dates – it usually warm weather and the living is easy. Great time to have a riot.