Populist Brexit-backer Nigel Farage was doused with what appeared to be a milkshake as he kicked off his campaign on Tuesday for the Britain’s July 4 general elections. He had just left a pub in the eastern seaside town of Clacton-on-Sea where he had been speaking to the media, when a bystander threw the drink over him. Police say they have arrested a 25-year-old woman from Clacton on suspicion of assault. The populist politician and former European Member of Parliament is making his eighth attempt at winning a seat in the House of Commons. After initially saying he would not stand in the elec…