People are always calling Republicians Racist when Democrats were the ones who owned slaves and were part of the Confereadacy

Not that you care about history that's happened since 1865 but you could google Southern Strategy.
http://www.salon.com/2013/12/22/how_the_gop_became_the_white_mans_party/

You'll notice how that changed after the civil rights act of 1964. The Dixiecrats, the Core of the Democrats in the former Confederate States, migrated away from the Democratic party, allowing George Wallace to win several states in the deep south. By '72, they were ready to vote for Nixon. Of the last three Democrats elected president, two were from former slave States. The third, Obama, pulled in a different demographic: the African American vote. Looking at the choices this hear, many stayed home.

Nope, those Democrats are now proud TEA Party Republicans.