A year ago, Elizabeth Schaeffer Brown joined former ICC chief prosecutor Luis Moreno-Ocampo and Kerry Propper, a financial entrepreneur, activist, and producer of the documentary Watchers of the Sky, on a visit to the Yazidis in Iraq, and together they began crowdsourcing evidence and organizing “It’s On U,” a political campaign to get the governments to refer the case to the ICC. In May, the campaign approached the human rights lawyer Amal Clooney, who agreed to lead the case on behalf of Nadia Murad and the nonprofit Yazda, the global organization representing the Yazidis.

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