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Racial stereotyping. For Martin Luther King, Jr., and other civil rights leaders, the sin of white racism was stereotyping all black people as inferior. It was a prejudice to be sure, but it was predicated on the assumption that all blacks were the same. King objected to stereotyping because he wanted blacks to be treated as individuals and not reduced exclusively to their racial identity (hence the meaning of his famous statement about the content of one's character taking precedence over the color of one's skin).
— Kim R. Holmes