If there’s no such thing as bad publicity, then Germany’s far-right Alternative für Deutschland (AfD) is on a roll. Since the start of last week, it has been on German newspaper front pages more often than not and, last Wednesday, on Berlin’s popular Inforadio station, three out of six news items were AfD-related. Political analysts say the only thing that can halt big wins for the party in June’s local and European Parliament elections, and three eastern state elections in September, is if long-simmering internal AfD feuds see it collapse from within. “The AfD is clearly a Teflon party where...