It effected the population because it protected peoples rights and not being segregated. That all people born in the U.S or naturalized were citizens including freed slaves.
Brown V board of education may 17, 1954. After the Court’s ruling in 1896 of Plessy v. Ferguson, segregation of public schools based solely on race was allowed by states if the facilities were “equal.” Brown overturned that decision. Despite the “equality” of facilities, the Court ruled that separate is inherently unequal. Hence public school segregation based on race was found to be in violation of the 14th Amendment’s Equal Protection Clause.