An upcoming book to be published by Penguin Random House. In retelling the epic history of the Bund and its extraordinary cast of characters during one of the most politically and culturally vibrant moments in European history, Crabapple asks a critical question: did the Bund fail because their of idea of solidarity was unworkable? Or did the world fail the Bund, who lost out to one blood-soaked idea after another, from Leninism to nationalism, Nazism to Zionism. This dynamic story is driven by that urgent question--and offers a new lens through which to see our contemporary struggles for solidarity in the face of tribalism.