Hold a major sporting, political or national event these days and chances are you’re going to be disrupted by a gaggle of greenies. Today’s unlucky victim was Sir Keir Starmer, giving the latest of his much-hyped ‘five missions’ speeches. As the London lawyer droned away, a pair of eco-zealots unfurled a flag behind him, protesting Labour’s decision to U-turn on the £28 billion Green New Deal.