I think the SC Dems cut their teeth as kids on blowing up churches and burning crosses, then spent their adolescence burning flags and spitting on troops coming back from Vietnam- this explains their hatred and hostility towards a black Army veteran.
However, South Carolina Demorats have NEVER been smart...from trying to start a Civil War against Andrew Jackson, to actually starting a Civil War 30 years later, to fighting against Civil Rights for African-Americans a 100 years later, now to this 21st Century Political Lynching.