It doesn't matter that he didn't accept it. The KKK's endorsement is the KKK saying that you are the candidate that is in their favor. Simply being in the favor of the KKK is a black mark.

What is 100% a set-up? The KKK endorsement? No, they really did endorse Trump, as an organization. Are you talking about PD standing there, with that sign? Sure, he went there to do that. Was he an agent of the government, or some influential organization? No, he is just an internet troll, that doesn't meet the requirements to be an agent provocateur. Further, what he did, did not make it seem as though the group, he had infiltrated, did something they had not, in order to malign them with the general public/government of review. He stood there, with a sign, that said something that is true.