The swap occurred sometime between the turn of the century and the great depression. The dust had mostly settled by the fifties due to the socdem policies of the Roosevelt presidency in the 30s and 40s, furthered by the Republican Southern Strategy after the short-lived Dixiecrats campaigned on racism. Dixiecrats were purely reactionary to desegregation, it was mostly progressive liberals in the south that were racist. Nixon was basically forced to pass the NEPA due to growing unrest around environmental harm. Hippies weren’t a target of the war on drugs just because they believed in free love.