The event unlikely to have happened in the context of the Civil Rights Movement is a white family watching a movie in an all-white theater in 1958.
Based on the information provided in the passages, the event most unlikely to have happened would be 'a white family watches a movie in an all-white theater in 1958.' This event would be unlikely in the context of the Civil Rights Movement as segregation was being challenged and racial discrimination in public places was being addressed.
The timeline of the Civil Rights Movement highlights significant events such as the Brown v. Board of Education ruling, the Civil Rights Acts of 1964 and 1968, and the Voting Rights Act of 1965.
Key figures like Martin Luther King, Jr., Rosa Parks, and the actions of organizations like the NAACP and SCLC were pivotal in advocating for equality and challenging discriminatory practices.
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