n Nature Knows No Color-Line, historian Joel Augustus Rogers examines the origins of racial hierarchy and the color problem. Rogers was a humanist who believed that there were no scientifically evident racial divisions—all humans belong to one “race.” He believed that color prejudice generally evolved from issues of domination and power between two physiologically different groups. According to Rogers, color prejudice was then used a rationale for domination, subjugation and warfare

Nature Knows No Color by J.A. Rogers