For a good number of years following World War II, straight, white men were thought of as America’s most privileged class. Returning veterans were considered war heroes and received all kinds of benefits — from the GI Bill to special opportunities for good jobs.But with the emergence of the civil rights movement, the women’s liberation movement and society’s gradual acceptance of its racial and ethnic diversity and LGBTQ population, that narrow category of people felt less exalted.Suddenly African …