Are you saying that Republicans hate or don't care about blacks, or are you just saying that the black parts of South Carolina are more Democrat than the rest of the state? The Republican Party was founded to fight for blacks. I'm white, but I'm a Republican in part because of that.
Oh come on, you are well aware that the parties don't bear much resemblance to where they were in the 1950s, much less the 1850s. You're a Republican because you're conservative, not because of what happened 160 years ago in a completely different world.