GREENSBORO, N.C. – The Greensboro sit-in protest took place at a lunch counter after a group of four black students from North Carolina A&T State University were refused service.

The event was a key moment in the Civil Rights movement across the segregated South and was commemorated.

Watch: Man In Historic Woolworth's Lunch Counter Sit-In Photo Remembers Day Of Integration

Thursday marks 58 years since the sit-ins. Joseph McNeil, Franklin McCain, Ezell Blair Jr., and David Richmond, better known as The Greensboro Four, entered the F.W. Woolworth store in Greensboro around 4:30 p.m. on Feb. 1, 1960, and purchased items at several counters, according to the International Civil Rights Center & Museum.

After purchasing the items, they decided to sit down at the store’s “whites only” lunch counter and ordered coffee. They were denied service and ignored. Soon after, they were asked to leave.

The Greensboro Four sat at the counter until the store closed early at 5 p.m. The Four then returned to campus and asked others to join them for the cause.

The next day, 25 men and four women, including the Greensboro Four, returned to the Woolworth’s store. The students sat at the “whites only” lunch counter from 11 a.m. until 3 p.m. and endured abuse from the white customers. The students sat with books and study materials and ignored the hecklers. They were still refused service.

Watch: Greensboro Is Home To Two Sites On The U.S. Civil Rights Trail

The sit-ins gathered strength over the next four days and eventually included more than 1,000 people filling the store in protest.

News of the sit-ins spread across the country and eventually 55 cities in 13 states had their own sit-in protests.

Related: The Rock Admires 'Greensboro Four' After Interactive Sit-In Experience

The F.W. Woolworth’s lunch counter in Greensboro served their first black customers, employees of the store, on July 25, 1960.

The lunch counter officially became desegregated on July 26, 1960.

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