In an interview with Ian Bremmer for GZERO World, Marietje Schaake, former member of EU Parliament and international policy director of the Cyber Policy Center at Stanford University, discusses the tradeoff between security and freedom when it comes to data surveillance. In a wide-ranging conversation about data and big tech, taped just days before cities entered lockdown in the United States, Schaake addresses early steps taken in Singapore and China to curb the spread of COVID-19 using tracking tools. The complete discussion is part of the latest episode of GZERO World which begins airing Friday, May 8, on national public television. Check local listings.