That's because Dixiecrats fled to the Republican Party when LBJ signed the civil rights bill in the 1960's. Comparing today's Republicans to Know-Nothings is apt, as comparing today's Republican Dixiecrats to previous Republican liberals is just as bogus as comparing today's liberal Democrats to Dixiecrats. FAIL
That's a socialist lie that you are either dumb enough to believe or dishonest enough to repeat.
It makes no sense because percentage wise more republicans voted for the bill than dems did. By a very large margin.