“A supposedly ‘voluntary’ survey checkpoint run by a private firm in Reading, Pennsylvania on behalf of the White House Office of National Drug Control Policy caused outrage when residents said they were forced off the road into a car park and coerced into giving cheek swabs as a result of an intimidating police presence. Reading resident Ricardo Nieves said that he had to repeatedly refuse to take part in the survey over a 5 minute period before the was allowed to leave. Nieves noted that the presence of city police and a police car with flashing lights was designed to ‘intimidate motorists’ into submission and ‘gave the checkpoint an air of authority it would not otherwise have had,'”
http://www.infowars.com/pennsylvanians-coerced-into-giving-cheek-swab-at-voluntary-checkpoint/