There is a very interesting Wikipedia article that puts this all in context.
List of incidents of civil unrest in the United States
https://en.wikipedia.org/wiki/List_of_incidents_of_civil_unrest_in_the_United_States
1967 – Long Hot Summer of 1967 refers to a year in which 159 race riots, almost all African-American, erupted across the United States.
1967 – Avondale riots, June 12–15, Cincinnati, Ohio
1967 – Buffalo riot of 1967, June 27, Buffalo, New York
1967 – 1967 Newark riots, July 12–17, Newark, New Jersey
1967 – 1967 Plainfield riots, July 14–21, Plainfield, New Jersey
1967 – Cairo riot, July 17, Cairo, Illinois
1967 – 1967 Detroit riot, July 23–29, Detroit, Michigan
1967 – Cambridge riot of 1967, July 24, a.k.a. the H. Rap Brown riot, Cambridge, Maryland
1967 – 1967 Saginaw riot, July 26, Saginaw, Michigan
1967 – Milwaukee riot, July 30, Milwaukee, Wisconsin
I wonder what triggered it off since MLK was not assassinated till 1968.
I wonder what triggered it off since MLK was not assassinated till 1968.