We Democrats have acknowledged and disavowed our racist past. Republicans now embrace their racist present and their racist future; that's all they've got left. Republicans are the parry of, by and for white supremacy.

The shift happened when LBJ signed the Civil Right Act of 1964 and said, "We've lost the South for a generation, but it's the right thing to do." He was off by several decades. Nixon picked up on Johnson's cue and developed the famous "Southern Strategy." Nixon's racist dog-whistles have become Trump's racist bull-horns.