When a protester was caught on video in January at a New York rally against Israel, only her eyes were visible between a mask and headscarf. “Months of them hiding their faces went down the drain!” a fledgling technology company boasted in a social media post, claiming its facial-recognition tool had identified the woman despite the coverings. A right-wing Jewish group said some people identified with the tool were on a list of names it submitted to President Donald Trump's administration, urging that they be deported in accordance with his call for the expulsion of foreign students who participated in “pro-jihadist” protests.