Kudos on your exemplary observations and astute analysis, Professor Watson. As I white male who advocates diversity and equal opportunity for all, I think that white conservatives of both political parties see the demographic shift and are frightened. The USA will continue to become a "minority-majority" population, as the number of whites stagnates, and the number of white men shrink, according to forecasts by the Census Bureau.
Those whites who espouse racist views either consciously or subconsciously need to face the reality that America is no longer a 1950s racist country where white families can flock to, and find solace in, exclusive suburban enclaves. Those who can't face the facts and continue to hold racist views deserve to be called out and castigated by society, especially by non-racist white men.