Congress of Racial Equality Handbill, "Don't Buy at Woolworth," 1960

In 1960, four African-American students sat down at a Woolworth lunch counter in Greensboro, North Carolina, and were refused service. This poster, produced by the Congress on Racial Equality (CORE), urged Americans to boycott the national five-and-dime chain. It was hoped that the loss of customer dollars would spur company officials to end the segregationist policies found in its southern stores.