How To Use Color line In A Sentence

And in 1930 a director of the West Side Community Center remarked that the two largest unassimilated immigrant groups were the most willing to cross the American color line: the Jew and the Italian seem to be the only people who will live in the same house with the Negroes. A Renegade History of the United States
Tuesday marks year number 50 since Jackie Robinson broke the color line in major league baseball.
White policing of the color line in the South and “latent” racism in the non-South contributed to a drastic overall decline in… the out-marriage ratio between 1880 and 1930. Don’t Bring Home a White Boy
The men stiffened up to the color line, charged forward with a cheer, and drove back the enemy.
No critique of American culture and manhood is complete without a discussion of athletics and the color line that long pervaded American sports.

Tuesday marks year number 50 since Jackie Robinson broke the color line in major league baseball.
Wright anatomizes all Dixon's premises when Bigger crosses the color line and enters the Daltons' white house.
Two pawns of the same color lined up on a file as the result of a capture.
Guy Lombardo, one of the white bandleaders who helped popularize jazz on Fifty-second Street, recalled that for many years “nightclub owners simply refused to break the color line, fearing financial consequences.” A Renegade History of the United States
As men and women, we can never do too much to assert our common humanity across color lines.
The collection examines the arbitrariness of color lines drawn both between and within races.
Tuesday marks year number 50 since Jackie Robinson broke the color line in major league baseball.
Historically, the society was divided along caste and color lines.
We looked into this chasm when our responses to the O. J. Simpson verdict cleaved largely along color lines.
But have we really desegregated ourselves along color lines as a society?