"Martin Luther King Jr. president of the Mongomery Improvement Association, which organized the Montgomery bus boycott of 1955. This began a chain reaction of similar boycotts throughout the South. In 1956, the Supreme Court voted to end segregated busing," (ushistory.org).
What caused the development of nativism in the 1920s? ... nativists thought this meant fewer immigrants should be let in the country. some people involved in postwar disputes were immigrant anarchists and socialists, who many americans believed were actually communists.