South African-American billionaire Elon Musk promoted the Alternative fur Deutschland (AfD) in unambiguous terms in a newspaper column, prompting the publication’s opinions editor to resign in protest. Germany has been failed by its legacy parties and is teetering on the brink of collapse, Elon Musk wrote in an op-ed for the Sunday edition of the national newspaper of record Die Welt. His diagnoses of Germany’s problems came with a suggested solution, voting for the right-sovereigntist AfD. The legacy media and prevailing political opinion in mainstream Germany considers the AfD extreme if not outright dangerous. Moves to ban the party are...