It’s hard to imagine climate fanatics smashing roof-loads of solar panels, gluing themselves to wind turbines or scrawling offensive semi-literate slogans on Chris Bowen’s electoral office. But you never know with the left. One minute something is approved of, the next it’s an unmitigated evil.

Take feminism. From being pioneers in the left’s campaign to remake our inherited culture, feminists of the original sort are now denounced as bigoted ‘terfs’ intent on repressing the hard-won freedoms of transfolk, especially of those men who masquerade as women so they can shine more easily at sport or affirm their new ‘gender identity’ by...