The sit-in movement was a nonviolent movement of the U.S. civil rights era that began in Greensboro, North Carolina, in 1960. The sit-in, an act of civil disobedience, aroused sympathy among moderates and uninvolved individuals. African Americans (later joined by white activists) would go to segregated lunch counters.
John Lewis, Civil Rights Movement
Milestones Of The Civil Rights Movement, American Experience, Official Site
Cooking Up Change: How Food Helped Fuel The Civil Rights Movement : The Salt : NPR
Civil Rights Activist Reflects On His Sit Ins During The Civil Rights Movement : NPR
Nashville sit-ins - Wikipedia
Short History of the 504 Sit in
Sit-In Movement – African American Civil Rights Movement
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Sit-in movement sparks social change