LAAYOUNE, Western Sahara — One day in November 2020, Sultana Khaya was driving to her home in the town of Boujdour when she was detained at a Moroccan military checkpoint. It seemed as if the officers were waiting for her. They dragged her to a police station where she claims officers sexually assaulted her, then placed her under house arrest along with her sister, Luara, and their elderly mother. Khaya is president of the Sahrawi Association for the Defense of Human Rights and an activist who