A few weeks ago. for example. supervisors of the Health. Education. and Welfare Department were being asked to report on employees who took part in moratorium and antiVietnam demonstrations. who did controversial things or made controversial statements. That same Department utilized its computerized files of thousands to maintain a blacklist of scientists. It is also supporting "peoplestudy." data banks such as one for the surveillance of migrant children. Numerous other instances of statistical data banks came to light in recent hearings by the Constitutional Rights Subcommittee on the powers of the Census Bureau and other agencies to demand personal data from citizens. On June 30 and November 10. 1969.