Sit-ins were a key form of nonviolent protest used during the Civil Rights Movement in the United States, led predominantly by African Americans. Sit-ins involved individuals occupying public spaces, such as restaurants, lunch counters, or other facilities that practiced segregation, in order to challenge discriminatory policies and demand equal rights.

One of the most famous sit-ins occurred on February 1, 1960, at the Woolworth's lunch counter in Greensboro, North Carolina. Four African American college students, known as the Greensboro Four, sat down at the "Whites Only" lunch counter and refused to leave until they were served. Their peaceful protest inspired similar actions across the country, sparking the sit-in movement.

Sit-ins were a powerful tool in the fight against segregation and discrimination, as they often gained media attention and highlighted the injustices faced by African Americans. These protests were met with violence and arrests in many cases, but they ultimately helped to bring about changes in segregation laws and advance the Civil Rights Movement.

Sit-ins were a significant part of Black history, showcasing the bravery and determination of those who were willing to challenge the status quo and fight for equality.