That appears to be a portrait of Nathan Bedford Forrest on Byrd's wall:
Per Wikipedia, Forrest "served as the first Grand Wizard of the Ku Klux Klan, a secret vigilante organization which launched a reign of terrorism against blacks, carpetbaggers, scalawags and Republicans during Reconstruction in the South."
Yup, that's our Bobby Byrd, Grand Kleagle and bright star of the Democrat Party.
