These people never left in 1964, they just switched parties and went underground. From Saint Ronnie to Jesse Helms to Lee Atwater to Pat Buchanan to David Duke to Donald Trump they've been a portion of the Republican base since the 80s. They've now finally surfaced, like worms after a rainstorm.
Maybe Trump is a blessing in disguise. We had gotten to where reasonable middle class whites thought these scum were dead. With this cloak, GOP justices had gutted the CRA of 1964 and were getting ready for even worse predations.
But now Trump has ruined the game and emboldened the knucks to walk in the sunlight again, and everybody with a conscience and a brain is recoiling in horror. And as "nice" Republicans prevaricate and excuse, those reasonable middle class whites are finally realizing what the GOP is and what they will allow to happen in the name of their team winning.
There probably is not a person under the age of 30 who can stand the GOP who is not a full-bore Neo-Nazi. They are destroying themselves by... being themselves.