It's easier to understand the origin of this thinking if you put it in some of its more recent historical contexts: * The "one drop of African blood" theory of

It's easier to understand the origin of this thinking if you put it in some of its more recent historical contexts: * The "one drop of African blood" theory of the Democrats' Old South * "Jewish heritage", pretty much anywhere * "Class history" in the Marxist Socialist circles * "Intellectualism" in Khmer Rouge Cambodia This is just another instance, from the same people who would have belonged to any one of these or similar groups. They all come from the same root intellectual history.