PROMINENT Jewish Labour activist David Rosenberg dramatically quit the party today, accusing the current leadership of launching a full-scale war on its own members . In a damning blog post, the Jewish Socialist Group founder condemned party leader Sir Keir Starmer for attacking the Labour left instead of the “most dangerous right-wing government I have lived under.” On his Rebel Notes website, under the heading “Reaching the tipping point,” he wrote: “A party founded by trade unionists and dedicated socialists is embarrassed now by its union links and is a hostile environment for socialists . “Latest estimates say 200,000 members...