A right-wing campaign to outlaw minarets on mosques in a referendum being held in Switzerland today has received an unlikely boost from radical feminists arguing that the tower-like structures are “male power symbols” and reminders of Islam’s oppression of women. A “stop the minarets” campaign has provoked ferment in the land of Heidi, where women are more likely than men to vote for the ban after warnings from prominent feminists that Islam threatens their rights. Forget about tranquil Alpine scenery and cowbells: one of the most startling features of the referendum campaign has been a poster showing a menacing woman...