"The Rising Tide of Color Against White World-Supremacy" by Lothrop Stoddard is a book published in 1920 about racialism and geopolitics. Stoddard argues that white supremacy faces collapse due to rising populations among people of color, growing nationalism in colonized nations, and Asian industrialization. He advocates for racial segregation, immigration restrictions, and maintaining racial "purity" to counter what he perceives as threats from non-white races. The work received both support and criticism, influencing segregationist politics while being condemned by civil rights activists and anthropologists. (This is an automatically generated summary.)