Question

why white people was racist with colored-people?

Answer 1

Statements like these assume that people of color are just like
you, white; that they have the same dreams, standards, problems,
and peeves that you do. “Colorblindness” negates the cultural
values, norms, expectations and life experiences of people of
color. Even if an individual white person could ignore a person’s
color, society does not. By saying we are not different, that
you don’t see the color, you are also saying you don’t see your
whiteness. This denies the people of colors’ experience of racism
and your experience of privilege.

Answer 2

@boness I mean back then 1940s?