Editors. "The sit-in movement begins". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11064, accessed 18 May 2013.]
In Greensboro, North Carolina, four black students begin a sit-in at a segregated Woolworth's lunch counter. Although they are refused service, they are allowed to stay at the counter. The event triggers many similar nonviolent protests throughout the Southern United States.