US midterms: Democrats look to big data to beat Trump

"To Mr McLaughlin, targeting people by values such as “equality” or “tradition” is fine, but profiling their emotional state is not. As AI improves, he believes campaigns should steer clear of any technology that makes decisions that are unexplainable. “We do not want to unilaterally surrender capabilities to the right — nor do we want to behave as though the ends justify the means,” he says."