Met police commissioner Mark Rowley and Green leader Zack Polanski have done nothing wrong but, as Sean O’Grady explains, public arguments can have unintended consequences Z ack Polanski has propelled the Greens firmly into contention with the other parties, with talk of his radical party replacing Labour – but with great success comes great scrutiny. As a result of a possibly unwise repost on social media about the Golders Green terror attack, he has received a public reprimand from the