Jackson Caines writes When the comprehensive history of Corbynism is written, it will date its demise not to the general election defeat in December 2019 or to the subsequent Labour leadership contest but to the 48 hours or so following the suspension of Jeremy Corbyn from the Labour Party on 29 October 2020. This historic moment has marked the final surrender of the Labour left to the establishment forces it sought to challenge. It is the turning of a page on a momentous, disorienting chapter in British political history and the unequivocal return to dominance of the Labour Party’s right…