Fact: David Duke was a democrat when he was in the Klan.
Fact: David Duke left the Klan almost 40 Years ago.
Fact: when David Duke ran as a Republican for the Presidency He won a higher percentage of votes that most of the candidates running this election cycle.
Fact: David Duke left the Klan before The Blues Brothers movie was released(1980).
I am no fan of David Duke by a long shot but using him to attack a Republican is a democrat’s gambit.
I haven't followed David Duke's career as you obviously have, so let me ask you: Has he renounced the beliefs that he presumable held dear when he was the leader of the KKK? Nothing in your response says anything about his current beliefs.
And, the fact that even a former KKK Grand Wizard could do better than "most of the candidates" in a Republican primary is a point of shame, not a bragging point.