Back in September 2018, just days after Rushan Abbas spoke at a Hudson Institute panel about the genocide of the Uyghurs, authorities in China arrested her sister and her aunt.“Two of my closest living relatives left back home, they both got picked up on the same day from 1,400 kilometers away from each other … as retaliation for my speaking out,” Ms. Abbas says.Her sister was sentenced to 20 years in prison.Many Uyghurs abroad are being blackmailed by the Chinese regime and their families held hostage, Ms. Abbas says. She is the founder and executive director of Campaign for Uyghurs.