History and Lovecraft: The Eugenics climate in turn-of-the-century USA

Although Lovecraft's ideas about race sound strange and even repulsive to modern audiences, the United States in the 1920s was awash with eugenics ideas. How did Darwinism, health policy (such as the Racial Integrity Act of 1924) and science shape Lovecraft's vision? And how can we approach this delicate topic without declaring Lovecraft simply a "man of his time" and dismiss any modern concerns his writing may produce? Silvia Moreno-Garcia, S. T. Joshi, Sean Hoade, Kenneth Hite.