We’re all watching a sci-fi movie in which ordinary human beings are infected by an alien pathogen. But rather than go on a murderous rampage, they start spouting pure nonsense. Unfortunately, the infected all seem to be Democrats running for president.

Take South Bend, Ind., Mayor Pete Buttigieg, the glitterati’s latest “it” candidate. During a Friday interview with Hugh Hewitt, he said removing Thomas Jefferson’s and Andrew Jackson’s names from the Democratic Party’s annual fundraising dinners was “the right thing to do”...