Oh dear. Every time Labour looks just about electable, up pops one of Keir Starmer’s MPs to help make that harder. Today it is the turn of Kate Osamor, one of the hard-of-thinking Corbynites who populate the opposition backbenches. She shot to fame back in 2018 when she threatened a Times reporter with a baseball bat after he had the temerity to ask her about her son’s conviction for drug offences.