Sit-ins were a form of nonviolent protest used during the Civil Rights Movement in the United States. This tactic involved individuals, often Black Americans, peacefully occupying seats at segregated lunch counters, restaurants, or other public places where they were denied service based on their race. By sitting in these spaces and refusing to leave, protesters drew attention to the unjust laws and policies of segregation.

One of the most famous sit-ins took place on February 1, 1960, in Greensboro, North Carolina, when four Black college students from North Carolina A&T State University sat down at a segregated Woolworth's lunch counter and demanded service. Their peaceful protest sparked a wave of similar sit-ins across the South, leading to the desegregation of many public places.

Sit-ins were a powerful and effective tool in the fight for civil rights, as they garnered widespread media attention and public support. They played a significant role in challenging segregation and bringing about changes in laws and policies that promoted racial equality.