“As Aintree fever grips UK… And he’s off his head. Green leader Polanski in bid to ban horse racing.” That was the front page of the Sun ahead of Grand National day. Posting the article on social media, Polanski reminded of his plan to end “rip-off Britain” by taking back “power and wealth from those who have stolen it.” He added how: “The Murdoch empire is terrified.” And it’s not hard to see why. Rather than engage seriously with Polanski’s pr…