Blackness before Jim Crow and Holywood meant another thing.
She was a sister, she looked like a sister, and at that time her particular classical african looks stood for pure blood: blue blood.
It was till 1848 apartheid reversed, blacks and brown ruling whites, using their skins to make shoes. Today we are still dealing with the fall out.
The whites, helped by black intellectuals, liberated themselves and fear being again oppressed again by Blacks: racism is a liberation ideology.
You will not give help, positions, power to an enemy.
Although this happened so long ago, they are still in fear of Blacks.
Cause and effect: why do whites hate Blacks? Because they were ruled and civilized by blacks, but also alas used as shoe leather