Brown v. Board coincided with Allport’s book publication year

Evidence

In 1896, for example, the Supreme Court, in the case of Plessy vs. Ferguson, handed down a ruling that undermined racial discrimination while affording segregation by establishing “separate but equal” facilities (e.g., schools, water fountains, restaurants) for White and Black Americans. Over time, however, it became evident that “separate but equal” was a fiction that was fundamentally at odds with the constitutional proclamation that “all men [sic] are created equal.” Indeed, in the same year that Allport published his book, the Supreme Court ruled in the case of Brown vs. The Board of Education that separate is inherently unequal and, in 1955, they decreed that schools should be desegregated with “all deliberate speed.” — , Rudman, Laurie A - On the Nature of…, 2084