Brexit has made clear that many of labour's heartland red wall Socialists are not International Socialists. To win them back he has to show that he and Labour are not revolutionaries willing to destroy British culture (whatever that is) in favour of Johnny Foreigner. The red flag needs to be replaced by a red, white and blue one and the bigger the better. An attack on the democratically elected prime minister in todays political climate is tantamount to treason.