I hope you're wrong, but this thread suggests you may be right. The less that people know about the Civil War, for example,
The killing of nine black churchgoers by a white gunman, Dylann Roof, in Charleston, S.C., sparked a
nationwide debate over the Confederate battle emblem.
Some, including Gov. Nikki Haley (R), have
argued that the flag should be removed from the Capitol grounds. The South Carolina Legislature followed suit, voting overwhelming to open debate on the removal of the flag. Others
oppose its removal. For example, Mike Ryhal, a member of the South Carolina House, referencing “South Carolina history,”
said, “I don’t think it should be removed.”
This debate is not
new, nor limited to South Carolina. Much of the
discussion revolves around the question of whether the flag represents “heritage or hatred” (see, for example,
here,
here, and
here). Drawing on rare survey data on this subject, we can shed light on this question. We find that white Southerners who support the Confederate flag are actually
less knowledgeable about Southern history; no stronger in their attachments to fellow Southerners (after racial attitudes are taken into account); less tolerant of interracial dating; and more likely to deny that blacks are discriminated against in the labor market.
. . . The argument that respect for Southern heritage drives white support for the Confederate flag might lead one to think that flag supporters would be more knowledgeable about Southern history. We found exactly the opposite: whites with more knowledge about Civil War history are actually
less supportive of the state flag prominently featuring the Confederate battle emblem:
. . . In contrast, attitudes toward blacks were strongly associated with support for the Confederate flag. Among those whites who say they would object if their child dated someone of a different race, preference for the Confederate battle emblem is a full 20 percentage points higher than it is among those whites who would not object: