FUNKTIONARY explains that a "Caucasian" - is "One whose worst and most basic fear still remains genetic annihilation in the form of the fear of the impending "Black Planet." Whither goest thou white man? (See: Weiteko Disease, Yurungu, Western Civilization, Recessive Genes, Colored People, Melanin & Mutant).
As stated by Dr. Frances Cress Welsing, white people are vulnerable to their sense of numerical inadequacy. Most white people consciously or subconsciously understand the following;
White plus Black equals Colored.
White plus Brown equals Colored.
White plus Yellow equals Colored.
The declining white population is not a new or reversible trend - the decline has only quickened. Although rarely discussed, white people are genetic recessive. It is scientific fact that Black is a genetically dominant trait. Whenever Black mixes with White, which is a recessive genetic trait, Black will dominate. In general, this means "whites" cannot reproduce a white child when they have sexual relations with non-whites. The so-called white "race" can and eventually will be replaced or "genetically annihilated" through such assimilation or social intermixing with non-whites. As white populations have been consistently declining, Black and Brown populations are surging. And this scares some racists to death. [MORE]
The above formula is the meaning of what "you will not replace us" and "‘Europe Will Be White." It also is what "Clean Blood’ is referring to - clean white blood.
As far as racists are concerned "replacement" is in fact what is occurring in the US & abroad. Persons who classify themselves as White make up less than 10% of the world's population and their numbers are shrinking fast. That is, 90% of the world population of 7 billion people are non-white.
White people are vastly outnumbered throughout the world and this scares some racists, fueling racism. A recent Reuters poll reflects white people fear of replacement as 31% of participants agreed "America must protect and preserve its White European heritage” and 39 percent agreed with the statement that “White people are currently under attack in this country.” [MORE]
Dr. Welsing explained that [among other things] numerical inadequacy drives white folks to practice racism - to survive and to maintain control of non-whites. [MORE]. Her color confrontation theory explained that the more the white population shrinks the worse its conduct toward non-whites will get. Racists practice racism to survive, it is a strategy for white genetic survival. [MORE]