<human>:  What was the name of the first major sit-in at a lunch counter in the United States?
<bot>: The first sit-in at a lunch counter in the United States was the Greensboro sit-in. It occurred on February 1, 1960. It was organized by four African American students from North Carolina Agricultural and Technical State University (A&T) who sat down at the segregated Woolworth’s lunch counter in Greensboro, North Carolina. The students were arrested and charged with trespassing. The sit-in was a landmark event in the Civil Rights Movement.