Identity politics is a corrosive ideology that will create division and hostility if it’s allowed to take hold – as the latest factional warfare in the Greens has shown.

Every political party experiences internal conflict from time to time, and the Greens are no exception. But unlike the garden-variety factionalism that occurs in the NSW branch – where Lee Rhiannon’s watermelon faction is in a perennial struggle against their more moderate rivals, the so-called “Tree Tories” –  the latest conflict in the Victorian Greens has escalated well beyond any reasonable personal or political differences, with extraordinary allegations of rampant racism, sexism, and...