colour line

British  

noun

1. the social separation of racial groups within a community (esp in the phrase to cross the colour line )

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Example Sentences

Hundreds of floral tributes of every colour line the castle's gates, gleaming in the mid-morning sunshine.

From BBC

At the heart of aspirations of the decade, in the air that the young Donald Harris and Barack Obama Sr breathed, was an anti-racist politics that was determined to abolish the global colour line.

From The Guardian

It’s a story about twin sisters, Desiree and Stella, who decide to live their lives on opposite sides of the colour line – one as a white woman and one as a black woman.

From The Guardian

“I’m sure if it wasn’t for Joe Louis, the colour line in baseball would not have been broken for another 10 years,” he said.

From Reuters

Ghettos and colour lines have been so hardy in such cities that their names inspire songs, films and fashion: the South Side, 8 Mile and the South Bronx.

From Economist