The "long hot summer" refers to the summer of 1967, which began a year in which 159 race riots erupted across the United States.

In June in there were riots in Atlanta, Boston, and Cincinnati, as well as the Buffalo riot in (Buffalo

Buffalo, New York

Buffalo is the second most populous city in the state of New York, after New York City. Located in Western New York on the eastern shores of Lake Erie and at the head of the Niagara River across from Fort Erie, Ontario, Buffalo is the seat of Erie County and the principal city of the...

, NewYork), and a riot in Tampa

Tâmpa

Tâmpa may refer to several villages in Romania:* Tâmpa, a village in Băcia Commune, Hunedoara County* Tâmpa, a village in Miercurea Nirajului, Mureş County* Tâmpa, a mountain in Braşov city...

, Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

.

In July there were riots in Birmingham, Chicago, New York, Milwaukee, Minneapolis, New Britain, Conn., Rochester, N.Y., and a riot

1967 Plainfield riots

The Plainfield Riots were a series of racially-charged violent disturbances that occurred in Plainfield, New Jersey during the summer of 1967, which mirrored the 1967 Newark riots in nearby Newark, New Jersey.-Background:...

 in Plainfield

Plainfield, New Jersey

Plainfield is a city in Union County, New Jersey, United States. As of the 2010 United States Census, the city's population increased to a record high of 49,808....

, New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

. The most serious riots of the summer took place in July, with the riot

1967 Newark riots

The 1967 Newark riots were a major civil disturbance that occurred in the city of Newark, New Jersey between July 12 and July 17, 1967. The six days of rioting, looting, and destruction left 26 dead and hundreds injured.-Social unrest:...

 in Newark, New Jersey

Newark, New Jersey

Newark is the largest city in the American state of New Jersey, and the seat of Essex County. As of the 2010 United States Census, Newark had a population of 277,140, maintaining its status as the largest municipality in New Jersey. It is the 68th largest city in the U.S...

 and the Twelfth Street Riot, in Detroit, Michigan

Michigan

Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

.

As a result of the rioting in the Summer of 1967, and the preceding two years, President Johnson established the Kerner Commission

Kerner Commission

The National Advisory Commission on Civil Disorders, known as the Kerner Commission after its chair, Governor Otto Kerner, Jr. of Illinois, was an 11-member commission established by President Lyndon B. Johnson to investigate the causes of the 1967 race riots in the United States and to provide...

to investigate the rioting.