In early December, a lone figure stood outside Evercare Hospital in Dhaka holding a handwritten placard: “I want to donate my kidney to Begum Khaleda Zia.” The man, Tipu Sultan, a 48-year-old grassroots activist of the Bangladesh Nationalist Party (BNP), refused to leave the pavement opposite the hospital gate. He said he would stay there until he heard news of her recovery. For Tipu, Khaleda Zia was not just a political leader....