April in Paris—the air is still crisp in the late afternoon. People mill around the Trocadéro with its view of the Ei el Tower. A woman, wearing a floor-length red chador covered with sequins, shimmers with each step as she moves near an assembly protesting Saudi Arabia’s war on Yemen. At first the demonstrators do not notice her, but as she passes them, a few of them suddenly break away to approach her. They talk excitedly at her and take photos. She bows deeply.